layered oxypnictide

Slater insulator

金属ー絶縁体転移

強相関エレクトロニクス

強相関電子物性

モット絶縁体

メモリ

ナノ材料物性

ナノ材料

ferromagnetic semiconductor

optical materials

Iayered oxysulfide

wide-gap semiconductor

Maguetic Semiconductor

Wide Gap Semiconductor

Layer Compounds(Intercalation)

Magnetic Material

Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Electric/electronic material engineering, Electronic materials/Electric materials

Nanotechnology/Materials, Nanomaterials, Nanomaterials engineering

Nanotechnology/Materials, Inorganic materials, Inorganic materials/Physical properties

Nanotechnology/Materials, Nanostructure physics, Nanostructural physics

Natural sciences, Semiconductors, optical and atomic physics, Physical Properties I

Natural sciences, Magnetism, superconductivity, and strongly correlated systems, Physical Properties II

Natural sciences, Magnetism, superconductivity, and strongly correlated systems, magnetism, low temperature physics

Apr. 2010 - Present
日本大学理工学部, 物理学科, 教授

Apr. 2006 - Mar. 2010
日本大学理工学部, 物理学科, 助教授

Apr. 2001 - Mar. 2006
'Lecturer (Full-Time), College of Science and Technology, Nihon University', 物理学科, 講師

Apr. 1997 - Mar. 2001
'Research Assistant (Full-Time), College of Science and Technology, Nihon University', 物理学科, 助手

Oct. 1996 - Mar. 1997
広島大学ナノデバイス・システム研究センター, 研究員

1996
Hiroshima University, Graduate School, Division of Natural Science, Material Science

1989
Ehime University, Faculty of Science, Physics

Apr. 2023 - Present
Organizing Committees, Program Vice Chari, Microprocesses and Nanotechnology Conference (MNC)

Apr. 2019 - Present
Nanofabrication Section Head, Microprocesses and Nanotechnology Conference (MNC)

Apr. 2008 - Present
Program committee, Microprocesses and Nanotechnology Conference (MNC)

Apr. 2017 - Mar. 2019
category representative, Applied Materials Science, The Japan Society of Applied Physics

Growth of highly oriented crystalline gold nanoislands on MgO(001) substrates for surface-enhanced Raman scattering chips by pulsed laser deposition
Satoshi Kurumi; Kosuke Sugawa; Kouichi Takase; Yudi Darma; Takuya Sagara; Ken-ichi Matsuda; Kaoru Suzuki; Bin Leong Ong; Andrivo Rusydi
Applied Physics Letters, Jul. 2023

Synthesis of Ag Nanoprisms with Precisely-tuned Localized Surface Plasmon Wavelengths by Sequential Irradiation of Light of Two Different Wavelengths
Naoto Takeshima; Kosuke Sugawa; Masaki Noguchi; Hironobu Tahara; Shota Jin; Kouichi Takase; Joe Otsuki and Kaoru Tamada
Chemistry Letters, 2020, Refereed, Not invited

Room-Temperature Ferromagnetism Induced by Zn Vacancy Enhancement Through ZnO Nanostructure Modification
Yudi Darma; Shibghatullah Muhammady; Rena Widita; Kouichi Takase
IEEE Magnetics Letters, 2020, Refereed, Not invited

Observation of Electronic Structures in Sr-Based Iridates by Bulk-Sensitive Photoemission Spectroscopy
Koya Nakagawa; Hidenori Fujiwara; Satoru Hamamoto; Sho Miyazaki; Yasuhiro Nakatani; Kentaro Kuga; Atsushi Higashiya; Toshiharu Kadono; Kenji Tamasaku; Makina Yabashi; Tetsuya Ishikawa; Takayuki Muro; Shin Imada; Akira Sekiyama; Kouichi Takase; Hiromi Kobori; and Atsushi Yamasaki
JPS Conf. Proc., 2020, Refereed, Not invited

Tuning the point-defect evolution, optical transitions, and absorption edge of zinc oxide film by thermal exposure during molecular beam epitaxy growth
Yudi Darma; Shibghatullah Muhammady; Yasni Novi Hendri; Euis Sustini; Rena Widita; Kouichi Takase
Materials Science in Semiconductor Processing, 2019, Refereed, Not invited
Last

Mie Resonance-Enhanced Light Absorption of FeS2 Nanocubes in a Near-Infrared Region: Intraparticulate Synergy between Electronic Absorption and Mie Resonances
Kosuke Sugawa; Mitsuaki Matsubara; Hironobu Tahara*; Daisuke Kanai; Jotaro Honda; Jun Yokoyama; Kotomi Kanakubo; Hiroaki Ozawa; Yasuhiro Watanuki; Yoshiyuki Kojima; Nobuyuki Nishimiya; Takamasa Sagara; Kouichi Takase; Masa-aki Haga; and Joe Otsuki
ACS Appl. Energy Mater., 2019, Refereed, Not invited

Tuning Optoelectronic Properties Through In‐Plane Arrangement and Point Defects in ZnO Nanorods as Prepared by Room‐Temperature DC‐Unbalanced Magnetron Sputtering
Muhammad A. K. Purbayanto; Eka Nurfani; Rena Widita; Kouichi Takase; Yudi Darma
Applications and Material Science, 2019, Refereed, Not invited

Post-annealing effects on excitonic states and defects in nanostructured Ti-doped ZnO thin films
Darma; Y; Nurfani; E; Purbayanto; MAK; Widita; R; Rusydi; A; Takase; K
MATERIALS RESEARCH EXPRESS, 2019, Refereed, Not invited
Last

Tuning the excitonic properties of ZnO:Sn thin films
Nurfani; E; Purbayanto; MAK; Akutsu; R; Naradipa; MA; Diguna; LJ; Birowosuto; MD; Takase; K; Rusydi; A; Darma; Y
OPTICAL MATERIALS, 2019, Refereed, Not invited

Plasmonic Silver Nanoprism-Induced Emissive Mode Control between Fluorescence and Phosphorescence of a Phosphorescent Palladium Porphyrin Derivative
Naoto Takeshima; Kosuke Sugawa*; Hironobu Tahara; Shota Jin; Hiroki Wakui; Misa Fukushima; Kyo Tokuda; Shuto Igari; Kotomi Kanakubo; Yutaro Hayakawa; Ryuzi Katoh; Kouichi Takase; and Joe Otsuki
ACS Nano, 2019, Refereed, Not invited

Electronic and Thermoelectric Properties of Layered Oxychalcogenides (BiO)CuCh (Ch = S, Se, Te)
Shibghatullah Muhammady; Yudhi Kurniawan; Seiya Ishiwata; Awabaikeli Rousuli; Toshiki Nagasaki; Shogo Nakamura; Hitoshi Sato; Atsushi Higashiya; Atsushi Yamasaki; Yoshiaki Hara; Andrivo Rusydi; Kouichi Takase; Yudi Darma
Inorganic chemistry, Aug. 2018, Refereed, Not invited

Hybrids of Two-dimensional Colloidal Crystals and Gold Nanoparticle Assemblies for Effective Surface-enhanced Raman Scattering with High Spatial Reproducibility
Miu Danno; 1 Satoshi Yoshinari; 1 Shuto Igari; 1 Jotaro Honda; Takumi Eguchi; Wataru Inoue; Keita Yasuhara; Shuta Hara; Hiroki Ikake; Shigeru Shimizu; Takeshi Toyama; Yasuyuki Kusaka; Nobuko Fukuda; Hirobumi Ushijima; Kouichi Takase; Kosuke Sugawa and Joe Otsuki
Chem. Letters, 2018, Refereed, Not invited

Weakening of excitonic screening effects in TixZn1-xO thin films
EkaNurfani; Christoforus Dimas; Satrya; Irfan Abdurrahman; Inge Magdalena Sutjahja; Toto Winata Kouichi Takase; Andrivo Rusydi; Yudi Darma
Thin Solid Films, 2018, Refereed, Not invited

Structural and magnetic properties of nickel nanowires grown in porous anodic aluminium oxide template by electrochemical deposition technique
Sendi Nugraha Pratama; Yudhi Kurniawan; Shibghatullah Muhammady; Kouichi Takase and Yudi Darma
Materials Research Express, 2018, Refereed, Not invited

Origin of fast-response photocurrent in ZnO thin film
Eka Nurfani; Muhammad A.K.Purbayanto; Takashige Aono; Kouichi Takase; Yudi Darma
Optical Materials, 2018, Refereed, Not invited

Precise Control of Localized Surface Plasmon Wavelengths Is Needed for Effective Enhancement of Triplet–Triplet Annihilation-Based Upconversion Emission
Shota Jin; Kosuke Sugawa*Kosuke Sugawa; Department of Materials and Applied Chemistry; College of Science and Technology; Nihon University; Chiyoda; Tokyo 101-8308; Japan; *E-mail: sugawa.kosuke@nihon-u.ac.jp. Tel.: +81-3-3259-0833. Fax: +81-3-3293-7572.; More by Kosuke Sugawa; Orcidhttp://orcid.org/0000-0002-3434-4632; Naoto Takeshima; Hironobu Tahara; Shuto Igari; Satoshi Yoshinari; Yuri Kurihara; Shiryu Watanabe; Masami Enoki; Kenta Sato; Wataru Inoue; Kyo Tokuda; Tsuyoshi Akiyama; Ryuzi Katoh; Kouichi Takase; Hiroaki Ozawa; Toshiya Okazaki; Takayuki Watanabe; and Joe Otsuki
ACS Photonics, 2018, Refereed, Not invited

One-pot synthesis of monodisperse CoFe2O4@Ag core-shell nanoparticles and their characterization
Shuta Hara; Jumpei Aisu; Masahiro Kato; Takashige Aono; Kosuke Sugawa; Kouichi Takase; Joe Otsuki; Shigeru Shimizu & Hiroki Ikake
Nanoscale Research Letters, 2018, Refereed, Not invited

Metal-insulator transition in Mott-insulator FePS3
Tsurubayashi M; Kodama K; Kano M; Ishigaki K; Uwatoko Y; Watanabe T; Takase K; Takano Y
AIP ADVANCES, 2018, Refereed, Not invited

Switching behavior of resistive change memory using oxide nanowires
Takashige Aono; Kosuke Sugawa; Tomohiro Shimizu; Shoso Shingubara and Kouichi Takase
Japanese Journal of Applied Physics, 2018, Refereed, Not invited
Last

Charge-density study on layered oxyarsenides (Lao)MAs (M = Mn, Fe, Ni, Zn)
Kouichi Takase; Shozo Hiramoto; Tetsuya Fukushima; Kazunori Sato; Chikako Moriyoshi; Yoshihiro Kuroiwa
Applied Physics Express, Dec. 2017, Refereed, Not invited

Magnetic properties of spinel cobaltite ACo2O4 (A = Zn and Li)
Ryota Murai; Minoru Maeda; Kouichi Takase; Yoshiki Takano; Tadataka Watanabe
Solid State Phenomena, 2017, Refereed, Not invited

Electric and Magnetic Properties of Transition-Metal Carbide Sc3TC4 (T = Co, Ru, Os)
Takuto Kazama; Minoru Maeda; Kouichi Takase; Yoshiki Takano; Tadataka Watanabe
Solid State Phenomena, 2017, Refereed, Not invited

Hole doping effect on the electronic structure of layered oxypnictide LaOMnAs
A. Higashiya; K. Nakagawa; A. Yamasaki K. Nagai; S. Fujioka; Y. Kanai; K. Yamagami; H. Fujiwara; A. Sekiyama; Amina Abozee; T. Kadono; S. Imada; K. Kuga; M. Yabashi; K. Tamasaku; T. Ishikawa; S. Toyama; K. Takase
Journal of Electron Spectroscopy and Related Phenomena, 2017, Refereed, Not invited
Last

Unrevealed electronic and optical properties of the layered oxychalcogenides (LaO)CuCh (Ch = S, Se, Te): A density-functional study
Shibghatullah Muhammady; Inge M. Sutjahja; Andrivo Rusydi; Toto Winata; Kouichi Takase and Yudi Darma
Japanese Journal of Applied Physics, 2017, Refereed, Not invited

Development of Plasmonic Cu2O/Cu Composite Arrays as Visible- and Near-Infrared-Light-Driven Plasmonic Photocatalysts
Kosuke Sugawa; Natsumi Tsunenari; Hideyuki Takeda; Saki Fujiwara; Tsuyoshi Akiyama; Jotaro Honda; Shuto Igari; Wataru Inoue; Kyo Tokuda; Naoto Takeshima; Yasuhiro Watanuki; Satoshi Tsukahara; Kouichi Takase; Tetsuo Umegaki; Yoshiyuki Kojima; Nobuyuki Nishimiya; Nobuko Fukuda; Yasuyuki Kusaka; Hirobumi Ushijima; and Joe Otsuki
Langmuir, 2017, Refereed, Not invited

Defect-induced excitonic recombination in Ti x Zn1− x O thin films grown by DC-unbalanced magnetron sputtering
Eka Nurfani; Robi Kurniawan; Takashige Aono; Kohei Takeda; Yuma Shirai; Inge M. Sutjahja; Andrivo Rusydi; Toto Winata; Kouichi Takase and Yudi Darma
Japanese Journal of Applied Physics, 2017, Refereed, Not invited

Element Substitution Effects on Magnetic Properties of Spin-Frustrated Spinel ZnB2O4 (B = Cr and Fe)
Takumi Ono; Daichi Oharu; Shota Kobayashi; Hayato Yamada; Shota Takita; Minoru Maeda; Kouichi Takase; Yoshiki Takano; Tadataka Watanabe
Solid State Phenomena, Oct. 2016, Refereed, Not invited

Fabrication and optical property of metal nanowire arrays embedded in anodic porous alumina membrane
Kouichi Takase; Tomohiro Shimizu; Kosuke Sugawa; Takashige Aono; Yuma Shirai; Tomohiko Nishida and Shoso Shingubara
Japanese Journal of Applies Physics, May 2016, Refereed, Not invited
Lead

Polarized hard X-ray photoemission system with micro-positioning technique for probing ground-state symmetry of strongly correlated materials
H. Fujiwara; S. Naimen; A. Higashiya; Y. Kanai; H. Yomosa; K. Yamagami; T. Kiss; T. Kadono; S. Imada; A. Yamasaki; K. Takase; S. Otsuka; T. Shimizu; S. Shingubara; S. Suga; M. Yabashi; K. Tamasaku; T. Ishikawa and A. Sekiyama
J. Synchrotron Radiation, 2016, Refereed, Not invited

Electric and Magnetic Properties of BiFe1-xMnxO3 Thin Films and CaFeOx/BiFe1-xMnxO3 Superlattices
Takaaki Inaba; Yuta Watabe; Keisuke Oshima; Chun Wang; Shohei Ohashi; Huaping Song; Hirotaka Matsuyama; Tomoko Nagata; Takuya Hashimoto; Kouichi Takase; Hiroshi Ishida; Yoshiki Takano; Kousaku Shimizu; Hiroshi Yamamoto; Nobuyuki Iwata
Transactions of the Materials Research Society of Japan, 2016, Refereed, Not invited

Extraordinary enhancement of porphyrin photocurrent utilizing plasmonic silver arrays
Kosuke Sugawa; Koji Uchida; Naoto Takeshima; Shota Jin; Natsumi Tsunenari; Hideyuki Takeda; Yuki Kida Tsuyoshi Akiyama; Joe Otsuki; Kouichi Takase and Sunao Yamada
Nanoscale, 2016, Refereed, Not invited

Three-dimensional electronic structures and the metal-insulator transition in Ruddlesden-Popper iridates
A. Yamasaki; H. Fujiwara; S. Tachibana; D. Iwasaki; Y. Higashino; C. Yoshimi; K. Nakagawa; Y. Nakatani; K. Yamagami; H. Aratani; O. Kirilmaz; M. Sing; R. Claessen; H. Watanabe; T. Shirakawa; S. Yunoki; A. Naitoh; K. Takase; J. Matsuno; H. Takagi; A. Sekiyama; and Y. Saitoh
PHYSICAL REVIEW B, 2016, Refereed, Not invited

Fabrication of nanocone arrays by two step metal assisted chemical etching method
T. Shimizu; N. Tanaka; Y. Tada; Y. Hara; N. Nakamura; J. Taniuchi; K. Takase; T. Ito; S. Shingubara
Microelectronic Engineering, 2016, Refereed, Not invited

Suppression of switching voltage variation by controlling filament formation in In/porous alumina/Al resistive change random access memory
Yusuke Tanimoto; Shintaro Otsuka; Tomohiro Shimizu; Shoso Shingubara and Kouichi Takase
Japanese Journal of Applied Physics, 2015, Refereed, Not invited
Last

Controlling I-V Characteristics of Resistive Change Memory (ReRAM) Using Nano-peak Structures
Kouichi Takase; Yusuke Tanimoto; Shintaro Otsuka; Tomohiro Shimizu; Shoso Shinguhara
INTERNATIONAL CONFERENCE ON ENERGY, ENVIRONMENT AND CHEMICAL ENGINEERING (ICEECE 2015), 2015, Refereed, Not invited

In-plain electric properties of [CaMnO3/REMO3] (RE = Bi, La M = Fe, Fe0.8Mn0.2) superlattices grown by pulsed laser deposition method
Nobuyuki Iwata; Yuta Watabe; Takahiro Oikawa; Kouichi Takase; Mark Huijben; Takaaki Inaba; Keisuke Oshima; Guus Rijnders; and Hiroshi Yamamoto
Japanese Journal of Applied Physics, 2014, Refereed, Not invited

Magnetic properties of the layered oxypnictides (LnO)MnAs (Ln = La, Ce, Pr, Nd)
Y. Morosawa; A. Naito; T. Watanabe; Y. Takano and K. Takase
EPJ Web of Conferences, 2014, Refereed, Not invited
Last

Effect of confining filaments on the current–voltage characteristics of resistive change memory by using anodic porous alumina
Yusuke Tanimoto; Shintaro Otsuka; Tomohiro Shimizu; Shoso Shingubara; Tadataka Watanabe; Yoshiki Takano and Kouichi Takase
Japanese Journal of Applied Physics, 2014, Refereed, Not invited
Last

Morphology dependence of optical reflectance properties for a high-density array of silicon nanowires
Takuya Yamaguchi; Tomohiro Shimizu; Yasuhiro Morosawa; Koichi Takase; Tzu-Ling Chen; Shin-Ming Lu; Hui-Ching Chien and Shoso Shingubara
Japanese Journal of Applied Physics, 2014, Refereed, Not invited

Effect of electric field concentration using nanopeak structures on the current–voltage characteristics of resistive switching memory
Shintaro Otsuka; Tomohiro Shimizu; Shoso Shingubara; Katsunori Makihara; Seiichi Miyazaki; Atsushi Yamasaki; Yusuke Tanimoto and Kouichi Takase
AIP Advances, 2014, Refereed, Not invited
Last

Carrier doping effects on the physical properties of the layered antiferromagnetic semiconductor (LaO)MnAs
A. Naito; Y. Morosawa; T. Watanabe; Y. Takano; K. Takase
JPS Conference Proceedings, 2014, Refereed, Not invited
Last

Preparation of Oxide Thin Films for Resistive Switching Memory by Plasma Assisted Pulsed Laser Deposition
S. Otsuka; T. Shimizu; S. Shingubara; S. Kurumi; K. Suzuki; T. Watanabe; Y. Takano; and K. Takase
International MultiConference of Engineers and Computer Scientists 2013, 2013, Refereed, Not invited
Last

Electric Conduction Mechanism of Resistive Switching Memory Fabricated with Anodic Aluminum Oxide
S. Otsuka; T. Shimizu; S. Shingubara; N. Iwata; T. Watanabe; Y. Takano; and K. Takase
ECS Transaction, 2013, Refereed, Not invited
Last

Enhancing the Superconducting Properties of Magnesium Diboride Without Doping
M.Maeda; J. H. Kim; S.Oh; W. X. Li; K. Takase; Y. Kuroiwa; S. X. Dou; Y. Takano
Journal American Ceramic Society, 2013, Refereed, Not invited

Improvement of the Reproducibility of the Switching Voltage of Resistance Change Random Access Memory by Restricting Formation of Conductive Filaments
Saeko Furuya; Shintaro Otsuka; Tomohiro Shimizu; Shouso Shingubara; Tadataka Watanabe; Yoshiki Takano; and Kouichi Takase
Japanese Journal of Applied Physics, 2013, Refereed, Not invited
Last

Additional Electrochemical Treatment Effects on theSwitching Characteristics of Anodic Porous Alumina Resistive Switching
Shintaro Otsuka; Ryouta Takeda; Saeko Furuya; Tomohiro Shimizu; Shouso Shingubara; Nobuyuki Iwata; Tadataka Watanabe; Yoshiki Takano; Kouichi Takase
Japanese Journal of Applied Physics, 2012, Refereed, Not invited
Corresponding

Transport Properties of Closely-Packed Carbon Nanotubes Film on SiC Tuned by Si-Doping
Wataru Norimatsu; Takehiro Maruyama; Kenta Yoshida; Koichi Takase; and Michiko Kusunoki
Applied Physics Express, 2012, Refereed, Not invited

Substitution effects in the Iron-Silicide Superconductor Lu2Fe3Si5
J Koshio; H Okuyama; K Takase; Y Takano and T Watanabe
Journal of Physics: Conference Series, 2012, Refereed, Not invited

Electronic structures of the FeSe superconductor studied by high-energy photoelectron spectroscopy
A Yamasaki; Y Matsui; S Imada; K Takase; H Azuma; T Muro; Y Kato; A Sekiyama; S Suga; A Higashiya; M Yabashi; K Tamasaku; T Ishikawa; K Terashima; H Kobori; A Sugimura; N Umeyama; H Sato; Y Hara; N Miyakawa and S I Ikeda
Journal of Physics: Conference Series, 2012, Refereed, Not invited

Fabrication of an Array of Ni/NiO Nanowire-ReRAM Using AAO Template on Si
Tomohiro Shimizu; Yuzuru Sumita; Fumihiro Inoue; Tetsuji Minokuchi; Shoso Shingubara; Shintaro Otsuka; Koichi Takase
e-Journal of Surface Science and Nanotechnology, 2012, Refereed, Not invited
Last

Hydrogen effect on characteristics of the resistive switching memory
Otsuka Shintaro; Shimizu Tomohiro; Shingubara Shoso; Kurumi Satoshi; Suzuki Kaoru; Iwata Nobuyuki; Watanabe Tadataka; Takano Yoshiki; Takase Kouichi
International meeting for Future of Electron Devices, Kansai (IMFEDK), 2012 IEEE, 2012, Refereed, Not invited
Last

Resistive switching characteristics of NiO/Ni nanostructure
Shintaro Otsuka; Saeko Furuya; Ryota Takeda; Tomohiro Shimizu; Shoso Shingubara; Tadataka Watanabe; Yoshiki Takano; Kouichi Takase
Microelectronics Engineering, 2012, Refereed, Not invited
Corresponding

In-field Jc improvement by oxygen-free pyrene gas diffusion into highly dense MgB2 superconductor
Maeda; M.; Kim; J. H.; Zhao; Y.; Heo; Y.-U.; Takase; K.; Kubota; Y.; Moriyoshi; C.; Yoshida; F.; Kuroiwa; Y.; Dou; S. X.
Journal of Applied Physics, 2011, Refereed, Not invited

Thermal Expansion of Oxyarsenides (LaO)TAs; T = Transition Metal
Shintaro Otsuka; Manami Onizawa; Koma Kato; Shozo Hiramoto; Fumiko Yoshida; Chikako Moriyoshi; Tadataka Watanabe; Yoshiki Takano; Yoshihiro Kuroiwa; Kouichi Takase
Solid State Phenomena, 2011, Refereed, Not invited

Superconductivity in Fluorine-Arsenide Sr1-xNdxFeAsF
Ryosuke Suganuma; Tadataka Watanabe; Kouichi Takase; Yoshiki Takano
Solid State Phenomena, 2011, Refereed, Not invited

Synthesis and Electronic Properties of TlFe2Se2-δ
Satoshi Horiguchi; Hirohiko Sato; Norio Umeyama; Yoshiaki Hara; Nobuaki Miyakawa; Kouichi Takase; Shinichi Ikeda
Solid State Phenomena, 2011, Refereed, Not invited

Disorder-Sensitive Superconductivity and Bonding Network in the Iron-Silicide Superconductor Lu2Fe3Si5
H. Okuyama; K. Takase; Yoshiki Takano; Tadataka Watanabe; Fumiko Yoshida; Chikako Moriyoshi; Yoshihiro Kuroiwa
Solid State Phenomena, 2011, Refereed, Not invited

Linear Thermal Expansion of FeSe Ferrimagnets
K. Takase; Y. Kaneko; S. Hiramoto; A. Yamasaki; N. Umeyama; S. I. Ikeda; C. Moriyoshi; T. Watanabe; Y. Takano; and Y. Kuroiwa
IEEE Transactions on Magnetics, 2011, Refereed, Not invited

Physical properties of Mn oxypnictide (LaO)MnPn; Pn  =  P, As, Sb
M. Onizawa; S. Otsuka; R. Takeda; K. Kato; N. Umeyama; S. Ikeda; S. Hiramoto; F. Yoshida; C. Moriyoshi; Y. Kuroiwa; K. Tobimatu; H. Sato; M. Sawada; H. Namatame; M. Taniguchi; T. Watanabe; Y. Takano; and K. Takase
AIP Conference Proceedings, 2011, Refereed, Not invited
Corresponding

Physical Properties of the Transition Metal Chalcogenide β‐FeSe
Y. Kaneko; H. Azuma; S. Hiramoto; Y. Matsui; M. Maeda; F. Yoshida; C. Moriyoshi; T. Watanabe; Y. Takano; A. Yamasaki; N. Umeyama; Y. Hara; S. Ikeda; Y. Kuroiwa; and K. Takase
AIP Conference Proceedings, 2011, Refereed, Not invited
Corresponding

Non-magnetic and magnetic impurity effects on superconductivity in the ternary iron-silicide Lu2Fe3Si5
Tadataka Watanabe; Hiroaki Okuyama; Kouichi Takase; Yoshiki Takano
Physica C, Dec. 2010, Refereed, Not invited

Synthesis of p-type zinc oxide films by plasma-assisted pulsed laser deposition
Tomoyuki Uehara; Satoshi Kurumi; Kouichi Takase and Kaoru Suzuki
APPLIED PHYSICS A, 2010, Refereed, Not invited

Electron correlation in the FeSe superconductor studied by bulk-sensitive photoemission spectroscopy
A. Yamasaki; Y. Matsu1; S. Imada; K. Takase; H. Azuma; T. Muro; Y. Kato; A. Higashiya; A. Sekiyama; S. Suga; M. Yabashi; K. Tamasaku; T. Ishikawa; K. Terashima; H. Kobori; A. Sugimura; N. Umeyama; H. Sato; Y. Hara; N. Miyagawa; and S. I. Ikeda
Physical Review B, 2010, Refereed, Not invited

Structural and physical properties of FeSe crystals fabricated by the chemical vapor transport method
Y. Hara; K. Takase; A. Yamasaki; H. Sato; N. Miyakawa; N. Umeyamae; and S.I. Ikeda
Physica C: Superconductivity, 2010, Refereed, Not invited

Superconductivity on FeSe synthesized by various sintering temperatures
N. Umeyama; M. Tomura; K. Takase; S. Hara; S. Horiguchi; A. Tominaga; H. Sato; Y. Hara; N. Miyakawa and S.I. Ikeda
Physica C: Superconductivity, 2010, Refereed, Not invited

Electrical and magnetic properties of (Sr1−xRxF)FeAs (R = La, Nd)
Ryosuke Suganuma; Xinzhe Jin; Tadataka Watanabe; Kouichi Takase and Yoshiki Takano
Journal of Physics: Conference Series, 2010, Refereed, Not invited

Electrical and Magnetic Properties of Layered Oxypnictide LaOCoPn (Pn = P, As)
Xinzhe Jin; Toshihiro Masubuchi; Tadataka Watanabe; Kouichi Takase; Yoshiki Takano
Journal of Physics: Conference Series, Mar. 2009, Refereed, Not invited

Electrical resistivity and electronic structure of the layered oxypnictides (LaO)ZnPn; Pn = P, As, Sb
K. Takase; H. Sato; S. Komatsuzaki; Y. Takahashi; T. Watanabe; M.Nakatake; H. Namatame; M. Taniguchi; and Y. Takano
Journal of Physics: Conference Series, 2009, Refereed, Not invited
Lead

Pressure Dependence of the Magnetic Properties of MnPS3
Wataru Toyoshima; Toshihiro Masubuchi; Tadataka Watanabe; Kouichi Takase; Kazuyuki Matsubayashi; Yoshiya Uwatoko; and Yoshiki Takano
Journal of Physics: Conference Series, 2009, Refereed, Not invited

Superconducting Properties of Lu2Fe3Si5 with Non-Magnetic Impurities
Hiroki Sasame; Toshihiro Masubuchi; Kouichi Takase; Yoshiki Takano and Tadataka Watanabe
Journal of Physics: Conference Series, 2009, Refereed, Not invited

Synthesis and Electrical and Magnetic Properties of LixB1+yC1−y
Ayako Noguchi; Satoshi Emori; Yumiko Takahashi; Kouichi Takase; Tadataka Watanabe; Kazuko Sekizawa; and Yoshiki Takano
Journal of Physics: Conference Series, 2009, Refereed, Not invited

Superconducting Properties of Boronitride La3M2B2N3−δ (M = Ni, Fe, Co)
Toshihide Maesaka; Toshihiro Masubuchi; Kouichi Takase; Yoshiki Takano; and Tadataka Watanabe
Journal of Physics: Conference Series, 2009, Refereed, Not invited

Non-Magnetic Impurity Effects in Antiferromagnetic Superconductor DyNi2B2C
Masashi Shishikura; Toshihiro Masubuchi; Kouichi Takase; Yoshiki Takano; and Tadataka Watanabe
Journal of Physics: Conference Series, 2009, Refereed, Not invited

Electrical and magnetic properties of La deficient superconductor La1−xOFeP
Xinzhe Jin; Tadataka Watanabe; Kouichi Takase; and Yoshiki Takano
Journal of Alloys and Compounds, 2009, Refereed, Not invited

Disorder-sensitive superconductivity in the doped iron silicide superconductor (Lu1−xRx)2Fe3Si5 (R=Sc, Y, and Dy)
Tadataka Watanabe; Hiroki Sasame; Hiroaki Okuyama; Kouichi Takase; and Yoshiki Takano
Physical Review B, 2009, Refereed, Not invited

Synthesis of non-stoichiometric (LaO)CuS thin films by pulse laser deposition
Satoshi Kurumi; Yohei Shimizu; Shotaro Kobayashi; Kouichi Takase; and Kaoru Suzuki
Applied Physics A, 2008, Refereed, Not invited

Electrical and magnetic properties of LnOZnPn
Yoshiki Takano; Satoshi Komatsuzaki; Hiroyuki Komasaki; Tadataka Watanabe; Yumiko Takahashi; and Kouichi Takase
Journal of Alloys and Compounds, 2008, Refereed, Not invited
Last

Photoluminescence and magnetic properties of CdPS3 intercalated with rare earth ions
Masayuki Aoike; Toshihiro Masubuchi; Eisuke Gonmori; Yoji Kubota; Tadataka Watanabe; Yumiko Takahashi; Kouichi Takase; and Yoshiki Takano
Journal of Alloys and Compounds, 2008, Refereed, Not invited

Phase diagram, magnetic properties and specific heat of Mn1-xFexPS3
Masubuchi Toshihiro; Hoya Hisanobu; Watanabe Tadataka; Takahashi Yumiko; Ban Shuichi; Ohkubo Naoki; Takase Kouichi; Takano Yoshiki
Journal of Alloys and Compounds, 2008, Refereed, Not invited

Charge density distribution of transparent p-type semiconductor (LaO)CuS
Kouichi Takase; Ken Sato; Osamu Shoji; Yumiko Takahashi; Yoshiki Takano; and Kazuko Sekizawa; Yoshihiro Kuroiwa; Manabu Goto
Applied Physics Letters, 2007, Refereed, Not invited
Lead

Synchrotron-radiation photoemission and O Kα emission study on (LnO)CuS (Ln = Ce, Pr, Nd)
H. Sato; S. Nishimoto; K. Tsuji; K. Takase; H. Nakao; Y. Takahashi; T. Takano; K. Sekizawa; H. Negishi; S. Negishi
Journal of Alloys and Compounds, 2006, Refereed, Not invited

Synthesis and the crystal structure of CeCuS2
S. Komatsuzaki; K. Takase; C.F. Smura; Y. Takahashi; Y. Takano; K. Sekizawa and S.J. Clarke
Journal of Alloys and Compounds, 2006, Refereed, Not invited

Crystal structure and physical properties of R(Ba1−xSrx)2Cu3Oy (R=Nd, Pr) prepared under reducing atmosphere
Tuerxun Wuernisha; F. Sano; Y. Takahashi; K. Takase; Y. Takano and K. Sekizawa
Journal of Alloys and Compounds, 2006, Refereed, Not invited

Magnetic properties of layered oxysulfide (LnO)CuS:Ln = La, Pr, Nd
H. Nakao; Y. Takano; K. Takase; K. Sato; S. Hara; S. Ikeda; Y. Takahashi and K. Sekizawa
Journal of Alloys and Compounds, 2006, Refereed, Not invited

Heavy fermion like behavior in layered Ce-based oxysulfides
Y. Takano; H. Nakao; Y. Takahashi; K. Takase; S. Misawa; J. Clarke; C.F. Smura and K. Sekizawa
Journal of Alloys and Compounds, 2006, Refereed, Not invited

Preparation and crystal structure analysis and physical properties of (LaO)CuTe
Y. Ohki; K. Takase; Y. Takahashi; Y. Takano and K. Sekizawa
Journal of Alloys and Compounds, 2006, Refereed, Not invited

Structural studies of Ca and transition metal co-doped system (La1−xCaxO)Cu1−xMxS (M=Mn, Co, Ni, Zn)
S. Koyano; K. Takase; Y. Kuroiwa; S. Aoyagi; O. Shoji; K. Sato; Y. Takahashi; Y. Takano and K. Sekizawa
Journal of Alloys and Compounds, 2006, Refereed, Not invited

Soft X-ray photoemission spectroscopy of (LaO)CuS (Ln=Ce, Pr, Nd)
H. Sato; S. Nishimoto; K. Takase; H. Hiroko; K. Yoshikawa; M. Higashi; M. Taniguchi; H. Negishi; S. Negishi; Y. Takahashi; Y. Takano; and K. Sekizawa
Phys. Stat. Sol. C, 2006, Refereed, Not invited

Magnetism and Interlayer Distance of MnPS3 Controlled by Intercalation and Applying HighPressure
T. Masubuchi; X. Jin; K. Koyama; Y. Takahashi; K. Takase; Y. Uwatoko; Y. Takano and K. Sekizawa
AIP Conference Proceedings, 2006, Refereed, Not invited

Structural and Electrical Properties of CaBe0.75 Si1.25
F. Sano; Y. Takahashi; K. Takase; Y. Takano and K. Sekizawa
AIP Conference Proceedings, 2006, Refereed, Not invited

Magnetic Properties of LnOZnSb (Ln=La, Ce, Pr)
S. Komatsuzaki; Y. Ohki; M. Sasaki; Y. Takahashi; K. Takase; Y. Takano and K. Sekizawa
AIP Conference Proceedings, 2006, Refereed, Not invited

Temperature Dependence of the Band Edge Emission of the Wide Gap Semiconductor (LaO)CuCh (Ch=S, Se, Te)
Y. Ohki; S. Komatsuzaki; Y. Takahashi; K. Takase; Y. Takano and K. Sekizawa
AIP Conference Proceedings, 2006, Refereed, Not invited

Mössbauer study of the transition metal phosphorus trichalcogenide FePS3 and spin glass Mn0.5Fe0.5PS3
Shuichi Ban; Yoshiki Takano; Naoki Ohkubo; Hisanobu Hoya; Yumiko Takahashi; Kouichi Takase; and Kazuko Sekizawa
Hyperfine Interaction, 2005, Refereed, Not invited

Crystal growth of Germanium-based oxide spinels by the Float Zone Method
Shigeo Hara; Yoshiyuki Yoshida; Shin-Ichi Ikeda; Naoki Shirakawa; Michael K. Crawford; Kouichi Takase; Yoshiki Takano and Kazuko Sekizawa
Journal of Crystal Growth, 2005, Refereed, Not invited

Non-stoichiometry effects on electrical and luminescence properties of the layered oxysulfide (LaO)CuS
K. Takase; S. Kanno; R. Sasai; K. Sato; Y. Takahashi; Y. Takano and K. Sekizawa
Journal of Physics and Chemistry of Solids, 2005, Refereed, Not invited
Lead

Aspect Ratio Dependence of Hysteresis Property of High Density Co Wire Array Buried in Porous Alumina Template
S. Shingubara; K. Morimoto; M. Nagayanagi; T. Shimizu; O. Yaegashi; G.R. Wu; H. Sakaue; T. Takahagi; K. Takase
Journal of Magnetism and Magnetic Materials, 2004, Refereed, Not invited
Last

Magnetic Properties and Specific Heat of KV1-xCrxP2S7
K. Sekizawa; M. Sashida; Y. Takano; Y. Takahashi; K. Takase
Journal of Magnetism and Magnetic Materials, 2004, Refereed, Not invited
Last

Magnetic Properties of Wide Gap Layered Semiconductor (La1-xMxO)Cu1-yTyS (M=Ca, Ce; T=Mn, Co, Zn)
K. Takase; O. Shoji; T. Shimizu; Y. Takahashi; Y. Takano; K. Sekizawa
Journal of Magnetism and Magnetic Materials, 2004, Refereed, Not invited
Lead

Magnetic Properties and Specific Heat of MPS3 (M=Mn, Fe, Zn)
Y. Takano; N. Arai; A. Arai; Y. Takahashi; K. Takase; K. Sekizawa
Journal of Magnetism and Magnetic Materials, 2004, Refereed, Not invited

Effects of Sr Substitution for Ba on the Crystal Structure, Oxygen Content and Electrical Properties of Nd(Ba1-xSrx)2Cu3O7-delta
T. Wuernisha; Y. Takahashi; K. Takase; Y. Takano; K. Sekizawa
Journal of Alloys and Compounds, 2004, Refereed, Not invited

Field-Induced Magnetic Anisotropy of Single Crystal GeNi2O4
S. Hara; Y. Yoshida; S. Ikeda; N. Shirakawa; M. K. Crawford; K. Takase; Y. Takano; K. Sekizawa
Journal of The Physical Society of Japan, 2004, Refereed, Not invited

Magnetic Properties and Specific Heat of New Spin Glass Mn0.5Fe0.5PS3
Y. Takano; A. Arai; Y. Takahashi; K. Takase; K. Sekizawa
Journal of Applied Physics, 2003, Refereed, Not invited

Electronic Structure of Oxysulfide (LaO)CuS and (La1-xCaxO)Cu1-xNixS (x <= 0.10) Studied by Photoemission and Inverse-Photoemission Spectroscopies
H. Sato; H. Negishi; A. Wada; A. Ino; S. Negishi; C. Hirai; H. Namatame; M. Taniguchi; K. Takase; Y. Takahashi; T. Shimizu; Y. Takano; K. Sekizawa
Physical Review B, 2003, Refereed, Not invited

Electrical Resistivity and Photoemission Spectra of Layered Oxysulfide (La1-xCaxO)Cu1-xNixS
K. Takase; T. Shimizu; K. Makihara; H. Sato; H. Negishi; Y. Takahashi; Y. Takano; K. Sekizawa; Y. Kuroiwa; S. Aoyagi; A. Utsumi; A. Wada; A. Ino; H. Namatame; M. Taniguchi
Physica B-condensed matter, 2003, Refereed, Not invited
Lead

Structural Defects Effect on Ferromagnetism of Layered Oxysulfide (La1-xCaxO)Cu1-xNixS
K. Takase; T. Shimizu; K. Makihara; Y. Takahashi; Y. Takano; K. Sekizawa; Y. Kuroiwa; S. Aoyagi; A. Utsumi
Physica B-condensed matter, 2003, Refereed, Not invited
Lead

Static and Dynamic Transport Study of beta-FeSi2 Single Crystals
Y. Hara; K. Takase; T. Shimizu; A. Ohnishi; M. Sasaki
Physica B-condensed matter, 2003, Refereed, Not invited

Room-temperature ferromagnetism in (Zn1-xMnx)GeP2 semiconductors
SL Cho; SY Choi; GB Cha; SC Hong; Y Kim; YJ Zhao; AJ Freeman; JB Ketterson; BJ Kim; YC Kim; BC Choi
PHYSICAL REVIEW LETTERS, Jun. 2002, Not refereed, Not invited

"Static and Dynamic transport study of β-FeSi₂ Single crystals"
Physica B, 2002, Not refereed

"Room Temperature Ferromagnetism in Semiconductor (La_l-xCa_xO)Cu_l-xNi_xS"
Proc.of 26th Int.Conf.on Semicond.Phys.,, 2002, Not refereed, Not invited

"Electrical Resistivity and Photoluminescence Spectrum of Layered Oxysulfide (LaO)CuS"
K Takase; M Koyano; T Shimizu; K Makihara; Y Takahashi; Y Takano; K Sekizawa
Solid State Commun., 2002, Not refereed, Not invited

"Photoluminescence of New Layered Wide Band Gap Semiconductors (LaO)CuS"
Proc.of 26th Int. Conf. on Semicond. Phys.,, 2002, Not refereed, Not invited

"Magnetization and Specific heat of a ferromagnetic zigzag spin chain compound LaCrOS₂"
Y Takano; T Tsubaki; C Itoi; K Takase; K Sekizawa
Solid State Communications, 2002, Not refereed, Not invited

"Anisotropic Magnetic Properties of Intercalation Compound Mn_1/4TiS₂"
K Takase; Y Kubota; Y Takano; H Negishi; M Sasaki; M Inoue; K Sekizawa
Physica B, 2000, Not refereed, Not invited

"Possibility of Charge Density Wave Transition in Tellurium Molybdenum Oxide TeMo₅0₁₆"
Hiroshi Negishi; Saiko Negishi; Minoru Sasaki; Masasi Inoue; Kouichi Takase; Yoji Kubota; Yoshiki Takano; Kazuko Sekizawa
J.J.Appl.Phys.,, 2000, Not refereed, Not invited

"Magnetic Properties of a ferromagnetic double spin chain compound LaCrOS₂"
Y Takano; K Takase; G Kitamura; C Itoi; K Sekizawa
J.Appl.Phys.,, 1999, Not refereed, Not invited

Effect of magnetic field on the specific heats of intercalation compounds M(x)TiS(2) (M=3d transition metals)
K Takase; H Negishi; M Sasaki; M Inoue
JOURNAL OF LOW TEMPERATURE PHYSICS, Apr. 1996, Not refereed, Not invited

"Oscillatory Behaviors of Photogenerated Carrier Diffusion in γ-Mo₄O₁₁ under Magnetic Field"
WX Gao; M Sasaki; H Negishi; K Takase; M Inoue
J.Low Temp. Phys.,, 1996, Not refereed, Not invited

"Transport Properties of Self-Intercalated Compound Ti_l+xS₂"
M Inoue; H Negishi; T Fujii; K Takase; Y Hara; M Sasaki
J.Phys.Chem.Solids, 1996, Not refereed, Not invited

"Low Temperature Specific Heat of Intercalation Compounds M_xTiS₂(M=3d Transition Metals)"
K TAKASE; M KOYANO; Y KATOH; M SASAKI; M INOUE
J.Low Temp. Phys.,, 1994, Not refereed, Not invited

"Valence-Band Energy Spectrum of Solid Solutions of Narrow-Gap-Semiconductor Bi_2-xSn_xTe₃ Single Crystals"
VA KULBACHINSKII; M INOUE; M SASAKI; H NEGISHI; WX GAO; K TAKASE; Y GIMAN; P LOSTAK; J HORAK
Phys. Rev. B, 1994, Not refereed, Not invited

"Local Heating Effect in Point-Contact Spectroscopy for Magnetic Metals of Ni and α-Mn"
H NEGISHI; K TAKASE; K FUNAKI; K FURUTA; M INOUE
J. Low Temp. Phys.,, 1993, Not refereed, Not invited

'磁気および比熱測定からみた低次元物質の物性, 機能性低次元伝導体に関する研究会'
中国電力技術研究財団, Jun. 1999, Not invited

Physical Society of Japan

Japan Society of Applied Physics

Development of Antiferromagnetic-Ferromagnetic Phase Transition by an Electric Field Application and Non-Volatile Magnetic Memory Application
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 01 Apr. 2021 - 31 Mar. 2024
岩田 展幸; 高瀬 浩一; 清水 智弘

光触媒／多波長吸収金属ナノワイヤーコアシェルアレイによる可視光利用高効率水素生成
日本学術振興会, 科学研究費助成事業, 01 Apr. 2018 - 31 Mar. 2023
高瀬 浩一; 清水 智弘; 田中 啓文

Spectroscopic study of electronic structures and quantum phase transition in 5d transition metal compounds
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 01 Apr. 2019 - 31 Mar. 2022
Yamasaki Atsushi

Magnetization reversal with electric field applied in antiferromagnetic dielectric with two dimensional spin arrangement / ferromagnetic multilayer
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 01 Apr. 2017 - 31 Mar. 2020
IWATA Nobuyuki

Spin-orbit coupled electronic structures studied by bulk-sensitive angle-resolved photoemission spectroscopy
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 01 Apr. 2015 - 31 Mar. 2018
YAMASAKI ATSUSHI; SEKIYAMA AKIRA; TAKASE KOICHI

Switching properties of resistive change memory with tiny limited space for conducting filament formation
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 01 Apr. 2015 - 31 Mar. 2018
TAKASE Kouichi; MAKIHARA Katsunori

Control of magnetization reversal and ferroelectric/ferromagnetic properties with electric field applied in a hetero epitaxial film
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 01 Apr. 2013 - 31 Mar. 2016
IWATA Nobuyuki; YAMAMOTO Hiroshi; HASHIMOTO Takuya; TAKASE Kouichi; TSUKAMOTO Arata

Facilitating Growth of Metal Encapsulated Carbon Nanotubes by Laser Assisted Thermal Decomposition Method and it's Focused Ion beam Processing for Magnetic Force Microscope New Type Probes
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2008 - 2010
SUZUKI Kaoru; TAKASE Koichi