Ultrafast magnetism

All-Optical magnetization Switching

Nanotechnology/Materials, Applied materials, Applied materials, Magnetic materials

Apr. 2023 - Present
Nihon University, College of Science and Technology, Assistant Professor

Apr. 2018 - Mar. 2023
日本大学, 理工学部, 助手

Apr. 2016 - Mar. 2018
Research Fellowship for Young Scientists(DC2) of the Japan Society for the Promotion of Science

Apr. 2015 - Mar. 2018
Nihon University, Graduate School of Science and Technology, Electronic Engineering

Apr. 2013 - Mar. 2015
Nihon University, Graduate School of Science and Technology, Electronic Engineering

Apr. 2009 - Mar. 2013
Nihon University, College of Science and Technology, Department of Electronics and Computer Science

2018 - Present
副代表, 応用物理学会 光若手チャプター

2018 - Present
幹事, 応用物理学会 光若手チャプター

Apr. 2018 - Sep. 2018
第42回日本磁気学会学術講演会 実行委員, 日本磁気学会

Institute of Electrical Engineers of Japan, 電気学会優秀論文発表賞
★GdFeCo薄膜内副格子磁化の磁性体膜厚依存性と全光型磁化反転現象, Official journal

Best poster award MORIS2018 (Magnetics and Optics Research International Symposium 2018)
International society

日本磁気学会, 日本磁気学会学術講演会 桜井講演賞
Japan society
第40回日本磁気学会学術講演会

Best poster award MORIS2015 (Magnetics and Optics Research International Symposium 2015)
International society

電子情報通信学会, 磁気記録・情報ストレージ研究会委員長賞
全光型超短熱パルス誘起磁化反転のGdFeCo副格子磁化依存性, Japan society
吉川大貴

Best poster award MORIS2013 (Magnetics and Optics Research International Symposium 2013)
International society

★Different helicity dependency of all-optical magnetization switching in GdFeCo films with optical interference layer
H. Yoshikawa; D. Tajima; Y. Kasatani; A. Tsukamoto
Jpn. J. Appl. Phys., 2022, Refereed
Lead

Temperature dependency of magnetization in ferrimagnetic thin films of rare earth- transition metal alloy thin films on heteroelement thin film
吉川大貴; 北澤楓太; 宋嘉浩; 笠谷雄一; 塚本新
電気学会マグネティックス研究会資料, Mar. 2024, Not refereed
Lead

Alterations in magnetic properties of crystals of trinuclear copper complexes: isolated entities versus one-dimensional chains
Yosuke Hosoya; Hiroki Yoshikawa; Arata Tsukamoto; Kosuke Sugawa; Joe Otsuki
Chemistry Letters, Feb. 2024

超短パルス円偏光における光学干渉層GdFeCo垂直磁化膜の光吸収特性の検討
田島大輝; 髙橋蒔生; 吉川大貴; 塚本 新
電気学会マグネティックス研究会資料, Mar. 2022, Not refereed

Electrical detection and current control of all-optical magnetization switching in GdFeCo ferrimagnetic alloy thin film
Y. Kasatani; H. Yoshikawa; A. Tsukamoto
Jpn. J. Appl. Phys., 2022, Refereed

GdFeCoフェリ磁性合金薄膜における全光型磁化反転の電気的検出と電流制御
笠谷雄一; 吉川大貴; 塚本新
電気学会マグネティックス研究会資料, Dec. 2021, Not refereed, Not invited

Magnetization Switching in the GdFeCo Films with In-Plane Anisotropy via Femtosecond Laser Pulses
D. O. Ignatyeva; P. O. Kapralov; K. H. Prabhakara; H. Yoshikawa; A. Tsukamoto and V. I. Belotelov
Molecules, Oct. 2021, Refereed

FePtナノ微粒子作製プロセスへの基板表面改質導入によるL10型規則合金相生成率の向上検討
小松田恭祐; 吉川大貴; 塚本 新
電気学会マグネティックス研究会資料, Mar. 2021, Refereed, Not invited

光学干渉層/GdFeCo磁性薄膜における超短時間磁化ダイナミクスおよび偏光状態依存性
髙橋蒔生; 田島大輝; 吉川大貴; 塚本 新
電気学会マグネティックス研究会資料, Mar. 2021, Refereed, Not invited

GdFeCo薄膜内副格子磁化の磁性体膜厚依存性と全光型磁化反転現象
吉川大貴; 笠谷雄一; 塚本新
電気学会マグネティックス研究会資料, Mar. 2020, Not refereed, Not invited
Lead

Application of Layered Structure for Efficient Light Absorption and Ultra-thin Film Formation in Material that Induces All-Optical Magnetization Switching
Arata Tsukamoto; Takeshi Iisaka; Hiroki Yoshikawa
IEEJ Transactions on Fundamentals and Materials, 2020

Plasmonic layer-selective all-optical switching of magnetization with nanometer resolution
D.O. Ignatyeva; C.S. Davies; D.A. Sylgacheva; A. Tsukamoto; H. Yoshikawa; P.O. Kapralov; A. Kirilyuk; V.I. Belotelov & A.V. Kimel
Nature Communications, Oct. 2019, Refereed, Not invited

Spin-transfer torques for domain wall motion in antiferromagnetically coupled ferrimagnets
Okuno Takaya; Kim Duck-Ho; Oh Se-Hyeok; Kim Se Kwon; Hirata Yuushou; Nishimura Tomoe; Ham Woo Seung; Futakawa Yasuhiro; Yoshikawa Hiroki; Tsukamoto Arata; Tserkovnyak Yaroslav; Shiota Yoichi; Moriyama Takahiro; Kim Kab-Jin; Lee Kyung-Jin; Ono Teruo
NATURE ELECTRONICS, Sep. 2019, Refereed, Not invited

Temperature dependence of magnetic resonance in ferrimagnetic GdFeCo alloys
Okuno Takaya; Kim Se Kwon; Moriyama Takahiro; Kim Duck-Ho; Mizuno Hayato; Ikebuchi Tetsuya; Hirata Yuushou; Yoshikawa Hiroki; Tsukamoto Arata; Kim Kab-Jin; Shiota Yoichi; Lee Kyung-Jin; Ono Teruo
APPLIED PHYSICS EXPRESS, Sep. 2019, Refereed, Not invited

Bulk Dzyaloshinskii-Moriya interaction in amorphous ferrimagnetic alloys
Kim Duck-Ho; Haruta Mitsutaka; Ko Hye-Won; Go Gyungchoon; Park Hyeon-Jong; Nishimura Tomoe; Kim Dae-Yun; Okuno Takaya; Hirata Yuushou; Futakawa Yasuhiro; Yoshikawa Hiroki; Ham Wooseung; Kim Sanghoon; Kurata Hiroki; Tsukamoto Arata; Shiota Yoichi; Moriyama Takahiro; Choe Sug-Bong; Lee Kyung-Jin; Ono Teruo
NATURE MATERIALS, Jul. 2019, Refereed, Not invited

Low Magnetic Damping of Ferrimagnetic GdFeCo Alloys
Kim Duck-Ho; Okuno Takaya; Kim Se Kwon; Oh Se-Hyeok; Nishimura Tomoe; Hirata Yuushou; Futakawa Yasuhiro; Yoshikawa Hiroki; Tsukamoto Arata; Tserkovnyak Yaroslav; Shiota Yoichi; Moriyama Takahiro; Kim Kab-Jin; Lee Kyung-Jin; Ono Teruo
PHYSICAL REVIEW LETTERS, Mar. 2019, Refereed, Not invited

Vanishing skyrmion Hall effect at the angular momentum compensation temperature of a ferrimagnet
Hirata Yuushou; Kim Duck-Ho; Kim Se Kwon; Lee Dong-Kyu; Oh Se-Hyeok; Kim Dae-Yun; Nishimura Tomoe; Okuno Takaya; Futakawa Yasuhiro; Yoshikawa Hiroki; Tsukamoto Arata; Tserkovnyak Yaroslav; Shiota Yoichi; Moriyama Takahiro; Choe Sug-Bong; Lee Kyung-Jin; Ono Teruo
NATURE NANOTECHNOLOGY, Mar. 2019, Refereed, Not invited

全光型磁化反転誘起材料の効率的光吸収・超薄膜化に向けた積層構造検討
飯坂 岳; 吉川大貴; 塚本 新
電気学会研究会資料. MAG, Nov. 2018, Not refereed, Not invited

Correlation between compensation temperatures of magnetization and angular momentum in GdFeCo ferrimagnets
Yuushou Hirata; Duck-Ho Kim; Takaya Okuno; Tomoe Nishimura; Dae-Yun Kim; Yasuhiro Futakawa; Hiroki Yoshikawa; Arata Tsukamoto; Kab-Jin Kim; Sug-Bong Choe; Teruo Ono
Physical Review B, Jun. 2018, Refereed, Not invited

Effect of depinning field on determination of angular-momentum-compensation temperature of ferrimagnets
Yuushou Hirata; Duck-Ho Kim; Takaya Okuno; Tomoe Nishimura; Yasuhiro Futakawa; Hiroki Yoshikawa; Wooseung Ham; Sanghoon Kim; Arata Tsukamoto; Yoichi Shiota; Takahiro Moriyama; Kab-Jin Kim; Teruo Ono
Applied Physics Express, May 2018, Refereed, Not invited

Determination of perpendicular magnetic anisotropy based on the magnetic droplet nucleation
Tomoe Nishimura; Duck-Ho Kim; Takaya Okuno; Yuushou Hirata; Yasuhiro Futakawa; Hiroki Yoshikawa; Sanghoon Kim; Arata Tsukamoto; Yoichi Shiota; Takahiro Moriyama; Teruo Ono
Japanese Journal of Applied Physics, May 2018, Refereed, Not invited

Three-dimensional visualization of magnetic domain structure with strong uniaxial anisotropy via scanning hard X-ray microtomography
M. Suzuki; Kab-Jin Kim; S. Kim; H. Yoshikawa; T. Tono; K. T. Yamada; T. Taniguchi; H. Mizuno; K. Oda; M. Ishibashi; Y. Hirata; T. Li; A. Tsukamoto; D. Chiba and T. Ono
Appl. Phys. Express, Jan. 2018, Refereed, Not invited

Correlation between magnetic properties and depinning field in field-driven domain wall dynamics in GdFeCo ferrimagnets
Nishimura Tomoe; Kim Duck-Ho; Hirata Yuushou; Okuno Takaya; Futakawa Yasuhiro; Yoshikawa Hiroki; Tsukamoto Arata; Shiota Yoichi; Moriyama Takahiro; Ono Teruo
Applied Physics Letters, 2018, Refereed, Not invited

フェリ磁性GdFeCo静・動磁気特性への界面近傍磁気不均一構造改質による寄与
二川康宏; 吉川大貴; 笠谷雄一; 田中万裕; Souliman El Moussaoui; 塚本新
電気学会マグネティックス研究会資料, Nov. 2017, Refereed, Not invited

Temperature dependence of spin-orbit effective fields in Pt/GdFeCo bilayers
Woo Seung Ham; Sanghoon Kim; Duck-Ho Kim; Kab-Jin Kim; Takaya Okuno; Hiroki Yoshikawa; Arata Tsukamoto; Takahiro Moriyama; Teruo Ono
APPLIED PHYSICS LETTERS, Jun. 2017, Refereed, Not invited

電子比熱に着目した金属多層膜化による全光型磁化反転の高効率励起
吉川大貴; Souliman El Moussaoui; 寺下進之佑; 塚本新
電気学会マグネティクス研究会資料, Mar. 2017, Not refereed, Not invited
Lead

Spontaneous ligand nitrosation and self-assembly into a pentacopper metallacrown complex
Joe Otsuki; Tatsuki Sekine; Yuki Kida; Yoshinao Shinozaki; Sayaka Kobayashi; Takahiro Tamura; Kosuke Sugawa; Isao Yoshikawa; Hirohiko Houjou; Hiroki Yoshikawa; Arata Tsukamoto
DALTON TRANSACTIONS, Mar. 2017, Refereed, Not invited

Temperature dependence of current-induced domain wall velocity in ferrimagnetic GdFeCo/Pt heterostructure
Okuno T.; Kim K.-J.; Taniguchi T.; Kim S.; Hirata Y.; Ham W.; Yoshikawa H.; Tsukamoto A.; Moriyama T.; Ono T.
Meeting Abstracts of the Physical Society of Japan, 2017

Domain wall resistance in ferrimagnetic GdFeCo
Hirata Y.; Kim K.-J.; Taniguchi T.; Kim S.; Okuno T.; Ham W.S.; Yoshikawa H.; Tsukamoto A.; Moriyama T.; Ono T.
Meeting Abstracts of the Physical Society of Japan, 2017

Magnetic layer thickness dependency of all-optical magnetization switching in GdFeCo thin films
Hiroki Yoshikawa; Souliman El Moussaoui; Shinnosuke Terashita; Ryohei Ueda and Arata Tsukamoto
Jpn. J. Appl. Phys., Jun. 2016, Refereed, Not invited
Lead

Temperature dependence of magnetoresistance in GdFeCo/Pt heterostructure
T. Okuno; K-J. Kim; T. Tono; S. Kim; T. Moriyama; H. Yoshikawa; A. Tsukamoto and T. Ono
Appl. Phys. Exp., Jun. 2016, Refereed, Not invited

Temperature dependence of magnetoresistances in ferrimagnetic GdFeCo/Pt heterostructure
Okuno T.; Kim K.-J.; Tono T.; Kim S.; Yoshikawa H.; Tsukamoto A.; Moriyama T.; Ono T.
Meeting Abstracts of the Physical Society of Japan, 2016

Thermally Assisted Magnetic Recording using Plasmon Antenna with Ultra Short Laser Pulse
H. Mano; H. Yoshikawa; H. Hashiba; Y. Ashizawa; A. Tsukamoto; Y. Sasaki; S. Saito; M. Takahashi; S. Ohnuki and K. Nakagawa
J. Magn. Soc. Jpn., Sep. 2015, Refereed, Not invited

Contribution of Magnetic Circular Dichroism in All-Optical Light Helicity-Dependent Magnetic Switching
A. Tsukamoto; S. Kogure; H. Yoshikawa; T. Sato; A. Itoh
In: Ultrafast Magnetism I - Proc. Int. Conf. UMC 2013, Springer Proceedings in Physics, Aug. 2014, Refereed, Invited

全光型超短熱パルス誘起磁化反転のGdFeCo副格子磁化依存性
吉川大貴; 塚本新; 伊藤彰義
信学技報, Jul. 2014, Not refereed, Not invited
Lead

Ultrafast heat pulse magnetization switching near compensation condition in GdFeCo
H. Yoshikawa; S. Kogure; S. Toriumi; T. Sato; A. Tsukamoto and A. Itoh
J. Magn. Soc. Jpn., May 2014, Refereed, Not invited
Lead

急速昇温熱処理による微細加工Pt/Fe積層ドットのL10規則合金化
苗木俊樹; 三吉啓介; 吉川大貴; 塚本新
日本磁気学会論文特集号, 01 May 2019, Refereed, Not invited

フェリ磁性体GdFeCoの磁化補償温度と角運動量補償温度の相関関係
平田雄翔; KIM Duck‐Ho; 奥野尭也; 西村幸恵; KIM Dae‐Yun; 二川康宏; 吉川大貴; 塚本新; KIM Kab‐Jin; CHOE Sug‐Bong; 小野輝男; 小野輝男
日本物理学会講演概要集(CD-ROM), 23 Mar. 2018, Not refereed, Not invited

フェリ磁性体の角運動量補償温度近傍におけるスピントランスファトルク
奥野尭也; KIM Duck‐Ho; OH Se‐Hyeok; 平田雄翔; 西村幸恵; KIM Se Kwon; 吉川大貴; 二川康宏; 塚本新; 塩田陽一; 森山貴広; KIM Kab‐Jin; LEE Kyung‐Jin; 小野輝男; 小野輝男
日本物理学会講演概要集(CD-ROM), 23 Mar. 2018, Not refereed, Not invited

フェリ磁性体GdFeCoを用いた磁場駆動磁壁ダイナミクスにおける磁気特性とデピニング磁場の相関
西村幸恵; KIM Duck‐Ho; 平田雄翔; 奥野尭也; 二川康宏; 吉川大貴; 塚本新; 塩田陽一; 森山貴広; 小野輝男; 小野輝男
応用物理学会春季学術講演会講演予稿集(CD-ROM), 05 Mar. 2018, Not refereed, Not invited

GdFeフェリ磁性薄膜におけるゼーベック効果に由来する異常ネルンスト効果の検討
小林祐希,笠谷雄一,吉川大貴,塚本新
第70回応用物理学会春季学術講演会, Mar. 2023, Not invited

L10-FePtナノ微粒子化における形態変化の急速熱処理前Fe/Pt薄膜微細加工面積依存性
清水雄太; 吉川大貴; 塚本新
電気学会マグネティックス研究会, Nov. 2022, Not invited

GdFeCo磁性二層膜における合成磁気モーメント量低減の検討
北澤楓太,吉川大貴,塚本新
第83回応用物理学会秋季学術講演会, Sep. 2022, Not invited

急速昇降温熱処理と微細加工を併用した規則配置されたL10-FePt微粒子群作製への検討
清水雄太,吉川大貴,塚本新
第46回日本磁気学会学術講演会, Sep. 2022, Not invited

アモルファスGdFeフェリ磁性薄膜における異常ネルンスト係数への異常ホール抵抗率の寄与
小林祐希,笠谷雄一,吉川大貴,塚本新
第46回日本磁気学会学術講演会, Sep. 2022, Not invited

組成比の異なるGdFe薄膜における異常ホール効果の温度依存性
宋嘉浩,笠谷雄一,吉川大貴,塚本新
第46回日本磁気学会学術講演会, Sep. 2022, Not invited

Helicity Dependent All-Optical magnetization Swiching on GdFeCo films with optical interference layer
H. Yoshikawa; D. Tajima; Y. Kasatani; A. Tsukamoto
Magnetics and Optics Research International Symposium 2022, May 2022, Not invited

Electrical detection and current control of All-Optical magnetization Switching in GdFeCo ferrimagnetic alloy thin film
Y. Kasatani; H. Yoshikawa; A. Tsukamoto
Magnetics and Optics Research International Symposium 2022, May 2022, Not invited

Modification of dynamic properties by extrinsic interaction in double layered ferrimagnetic film
A. Tsukamoto; T. Takahashi; H. Yoshikawa
Magnetics and Optics Research International Symposium 2022, May 2022, Not invited

光学干渉構造を有するGdFeCo薄膜の全光型磁化ダイナミクス計測評価
髙橋蒔生,吉川大貴,塚本 新
第68回応用物理学会 春季学術講演会, Mar. 2021, Not invited

実効的磁気円二色性に着目した磁気光学干渉構造膜の光吸収率
田島大輝,吉川大貴,塚本 新
第68回応用物理学会 春季学術講演会, Mar. 2021, Not invited

光学干渉層/GdFeCo磁性薄膜における超短時間磁化ダイナミクスおよび偏光状態依存性
髙橋蒔生,田島大輝,吉川大貴,塚本 新
電気学会マグネティックス研究会, Mar. 2021, Not invited

FePtナノ微粒子作製プロセスへの基板表面改質導入によるL10型規則合金相生成率の向上検討
小松田恭祐,吉川大貴,塚本 新
電気学会マグネティックス研究会, Mar. 2021, Not invited

GdFeCo薄膜内副格子磁化の磁性体膜厚依存性と全光型磁化反転現象
吉川大貴,笠谷雄一,塚本 新
電気学会マグネティックス研究会, Mar. 2020, Not invited

Electrical detection and modulation of All-Optical magnetization Switching in GdFeCo ferrimagnetic alloy
笠谷雄一; 吉川大貴; 塚本新
New Perspective in Spin Conversion Science (NPSCS2020), Feb. 2020, Not invited

Thickness dependency of GdFeCo films and All-optical magnetization switching phenomena
吉川大貴; 笠谷雄一; 塚本新
New Perspective in Spin Conversion Science (NPSCS2020), Feb. 2020, Not invited

超短時間光-物質間作用と多層全光型磁気記録
塚本新; 吉川大貴; 笠谷雄一
日本磁気学会光機能磁性デバイス・材料専門研究会, Jan. 2020, Not invited

Electrical detection of all-optical magnetization switching in ferrimagnetic GdFeCo alloy by anomalous Hall effect
Yuichi Kasatani; Hiroki Yoshikawa; Arata Tsukamoto
MATERIALS RESEARCH MEETING 2019(MRM2019), Dec. 2019, Not invited

Plasmonic layer-selective all-optical switching of magnetization with nanometer resolution
C. Davies; D. Ignatyeva; D. Sylgacheva; A. Tsukamoto; H. Yoshikawa; P. Kapralov; A. Kirilyuk; V. Belotelov and A. Kimel
64th Annual Conference of Magnetism and Magnetic Materials (MMM2019), Nov. 2019, Not invited

Temperature Dependence of Magnetic Resonance in Ferrimagnetic GdFeCo Alloys
T. Moriyama; D. Kim; H. Mizuno; T. Ikebuchi; Y. Hirata; H. Yoshikawa; A. Tsukamoto; K. Kim; Y. Shiota; K. Lee and T. Ono
64th Annual Conference of Magnetism and Magnetic Materials (MMM2019), Nov. 2019, Not invited

Vanishing skyrmion Hall effect at the angular momentum compensation temperature of a ferrimagnet
D. Kim; S. Kim; D. Lee; S. Oh; D. Kim; T. Nishimura; T. Okuno; Y. Futakawa; H. Yoshikawa; A. Tsukamoto; Y. Tserkovnyak; Y. Shiota; T. Moriyama; S. Choe; K. Lee and T. Ono
64th Annual Conference of Magnetism and Magnetic Materials (MMM2019), Nov. 2019, Not invited

TbFeフェリ磁性合金薄膜静磁気特性の膜厚依存性とその抑制
長谷川任; 吉川大貴; 塚本新
第43回日本磁気学会学術講演会, Sep. 2019, Not invited

フェリ磁性体GdFeCo合金における磁気共鳴の温度依存性
奥野尭也; S. Kim; 森山貴広; D. Kim; 水野隼翔; 池渕徹也; 平田雄翔; 吉川大貴; 塚本新; K. Kim; 塩田陽一; K. Lee; 小野輝男
第43回日本磁気学会学術講演会, Sep. 2019, Not invited

GdFeCoフェリ磁性体合金における全光型磁化反転交番誘起の異常ホール効果による電気的検出
笠谷雄一; 吉川大貴; 塚本新
第43回日本磁気学会学術講演会, Sep. 2019, Not invited

All-Optical Magnetization Switching In GdFeCo on Electronic Heat Conversion Layers
H. Yoshikawa; Y. Kasatani; and A. Tsukamoto
Magnetics and Opticcs Research International Symposium (MORIS2019), Jun. 2019, Not invited

Electrical Detection of Single Shot All-Optical Magnetization Switching in Ferrimagnetic GdFeCo Alloy
Y. Kasatani; H. Yoshikawa and A. Tsukamoto
Magnetics and Opticcs Research International Symposium (MORIS2019), Jun. 2019, Not invited

全光型磁化反転誘起材料の効率的光吸収・超薄膜化に向けた積層構造検討
飯坂岳; 吉川大貴; 塚本新
電気学会マグネティックス研究会, Nov. 2018, Not invited

GdFe合金薄膜におけるGd磁気モーメントと異常ホール効果の相関
蜂須賀裕重; 笠谷雄一; 吉川大貴; 塚本新
第42回日本磁気学会学術講演会, Sep. 2018, Not invited

磁気的膜厚依存性抑制層を付加した GdFeCo 薄膜の全光型磁化反転
飯坂岳; 吉川大貴; 二川康宏; 塚本新
第42回日本磁気学会学術講演会, Sep. 2018, Not invited

希土類―遷移金属フェリ磁性体/4 f 金属ヘテロ接合におけるスピン軌道トルク
笠谷雄一; 吉川大貴; 二川康宏; 塚本新
第42回日本磁気学会学術講演会, Sep. 2018, Not invited

フェリ磁性体GdFeCoを用いた磁場駆動磁壁ダイナミクスにおける磁気特性とデピニング磁場の相関
西村 幸恵,Kim Duck-Ho,平田 雄翔,奥野 尭也,二川 康宏,吉川 大貴,塚本 新,塩田 陽一,森山 貴広,小野 輝男
第65回応用物理学会春季学術講演会, Mar. 2018, Not invited

Spin-orbit torque in 4f-metal / RE-TM ferrimagnet heterostructures
Yuichi Kasatani; Hiroki Yoshikawa; Yasuhiro Futakawa; Arata Tsukamoto
Magnetics and Opticcs Research International Symposium (MORIS2018), Jan. 2018, Not invited

Effect of SiN underlayer on the crystallization process of isolated FePt grains in rapid thermal annealing
Keisuke Miyoshi; Toshiki Naeki; Masahiro Tanaka; Yasuhiro Futakawa; Hiroki Yoshikawa; Arata Tsukamoto
Magnetics and Opticcs Research International Symposium (MORIS2018), Jan. 2018, Not invited

The formation of monodisperse patterned FePt dots by rapid thermal annealing
Toshiki Naeki; Keisuke Miyoshi; Masahiro Tanaka; Yasuhiro Futakawa; Hiroki Yoshikawa; Arata Tsukamoto
Magnetics and Opticcs Research International Symposium (MORIS2018), Jan. 2018, Not invited

Influence of the transition metal on the magnetic properties of GdFeCo thin films for ultrafast magnetic recording
Souliman El Moussaoui; Hiroki Yoshikawa; Tetsuya Sato; Arata Tsukamoto
Magnetics and Opticcs Research International Symposium (MORIS2018), Jan. 2018, Not invited

All-optical magnetization switching in GdFeCo/Pt
Hiroki Yoshikawa; Yasuhiro Futakawa; Yuichi Kasatani; Soulian El Moussaoui; Arata Tsukamoto
Magnetics and Opticcs Research International Symposium (MORIS2018), Jan. 2018, Not invited

Modification of magnetic inhomogeneous structure near the interfaces in amorphous GdFeCo ferrimagnetic thin film
Yasuhiro Futakawa; Hiroki Yoshikawa; Yuichi Kasatani; Souliman El Moussaoui; Arata Tsukamoto
Magnetics and Opticcs Research International Symposium (MORIS2018), Jan. 2018, Not invited

磁性層の実効的光吸収率増大による全光型磁化反転の高効率化
第41回日本磁気学会学術講演会, Sep. 2017, Not invited

Pt下地層によるGdFeCo全光型磁化反転閾値の低減効果
吉川大貴; Souliman El Moussaoui; 笠谷雄一; 二川康宏; 塚本新
第41回日本磁気学会学術講演会, Sep. 2017, Not invited

単分散FePtドット周期構造の急速昇降温熱処理による高保磁力微粒子の配列パターン形成
苗木俊樹; 田中万裕; 牧野哲也; 吉川大貴; 塚本新
第41回日本磁気学会学術講演会, Sep. 2017, Not invited

GdFeCoフェリ磁性体界面近傍磁気不均一構造の検討
二川康宏; Souliman EL Moussaoui; 吉川大貴; 笠谷雄一; 塚本新
第41回日本磁気学会学術講演会, Sep. 2017, Not invited

ALL-OPTICAL MAGNETIZATION SWITCHING ON GdFeCo/METAL FILMS TRRIGERED BY FEMTOSECOND PULSED LASER
H. YOSHIKAWA; S. EL MOUSSAOUI; Y. KASATANI; A. TSUKAMOTO
The 28th Magnetic Recording Conferene（TMRC2017), Aug. 2017, Not invited

Temperature dependence of current-induced effective fields in Pt/GdFeCo
Woo Seung Ham; Sanghoon Kim; Kab -Jin KimJ; Takaya Okuno; Hiroki Yoshikawa; Arata Tsukamoto; Takahiro Moriyama; and Teruo Ono
第64回応用物理学会春季学術講演会, Mar. 2017, Not invited

GdFeCo 層/FePt 微粒子群 微小不均一界面構造による磁気緩和増大検討
二川 康宏,吉川 大貴,植田 涼平,田中 万裕,塚本 新
第64回応用物理学会春季学術講演会, Mar. 2017, Not invited

交換結合FePt孤立微粒子上GdFeCo層の磁化動特性
Y. Futakawa; R. Ueda; H. Yoshikawa; M. Tanaka and A. Tsukamoto
The Materials Research Society of Japan (MRS-J) 第27回日本MRS年次大会, Dec. 2016, Not invited

All – optical magnetization switching in GdFeCo thin films stacked on different metallic layers
H. Yoshikawa; S. El Moussaoui; A. Tsukamoto
International workshop on novel photo induced phenomena and applications, Nov. 2016, Not invited

Increase of magnetic relaxation with artificial magnetic inhomogeneity in GdFeCo thin film deposited on FePt isolated particles
Y. Futakawa; H; Yoshikawa; R. Ueda; M. Tanaka and A. Tsukamoto
International workshop on novel photo induced phenomena and applications, Nov. 2016, Not invited

Magnetic properties on Gd/GdFeCo/Gd structures with different GdFeCo layer thickness
R. Ueda; H. Yoshikawa; A. Tsukamoto
International workshop on novel photo induced phenomena and applications, Nov. 2016, Not invited

Multiple magnetization state on GdFeCo bilayer controlled by All-optical magnetization switching
S. Terashita; H. Yoshikawa; A. Tsukamoto
International workshop on novel photo induced phenomena and applications, Nov. 2016, Not invited

Tc controlled TbFe/GdFeCo hybrid thermo-magnetic structure for small switching field and high thermal stability
A. Tsukamoto; Y. Sonobe; ○H. Yoshikawa
61st Annual Conference on Magnetism and Magnetic Materials, Nov. 2016, Not invited

All – optical magnetization switching in GdFeCo stacked on different metallic layers
H. Yoshikawa; S. El Moussaoui; A. Tsukamoto
International workshop on nano-spin conversion science & quantum spin dynamics, Oct. 2016, Not invited

希土類-遷移金属合金フェリ磁性体の電流磁気効果
笠谷雄一、吉川大貴、塚本新
第40回日本磁気学会学術講演会, Aug. 2016, Not invited

Influence of trasition metal sublattice in Gd23(Fe1-xCox)77 amorphous alloys for the laser induced magnetization reversal
S. El Moussaoui; H. Yoshikawa; T. Sato; A. Tsukamoto
第40回日本磁気学会学術講演会, Aug. 2016, Not invited

高密度ナノ磁性微粒子上連続磁性膜磁気緩和特性の増大検討
二川康宏; 吉川大貴; 植田涼平; 田中万裕; 塚本新
第40回日本磁気学会学術講演会, Aug. 2016, Not invited

全光型磁化反転のGdFeCo層隣接3d遷移金属依存性
吉川大貴,Souliman El Moussaoui; 寺下進之佑; 植田涼平; 塚本新
第40回日本磁気学会学術講演会, Aug. 2016, Not invited

キュリー温度変調TbFe/GdFeCo交換結合構造による反転磁界制御
塚本新; 園部義明; ○吉川大貴
第40回日本磁気学会学術講演会, Aug. 2016, Not invited

The non-local energy dissipation in All-Optical magnetization Switching of GdFeCo thin films
H. Yoshikawa; S. El Moussaoui; S. Terashita; R. Ueda; A. Tsukamoto
4th International Conference of Asian Union of Magnetics Societies, Aug. 2016, Not invited

All-Optical magnetization Switching on multi level GdFeCo magnetic double layered film
S. Terashita; H. Yoshikawa and A. Tsukamo
4th International Conference of Asian Union of Magnetics Societies, Aug. 2016, Not invited

GdFeCo and metallic layer thickness dependency of ultrashort pulsed laser induced All-Optical magnetization Switching
H. Yoshikawa; S. El Moussaoui; S. Terashita; R. Ueda and A. Tsukamoto
新学術領域ナノスピン変換科学 平成27年度スピン変換年次報告会, Jan. 2016, Not invited

Layer selective All-Optical magnetization switching in GdFeCo double layer film and nanoscale confinement with nano-rod antenna
A. Tsukamoto; H. Yoshikawa and S. Terashita
新学術領域ナノスピン変換科学 平成27年度スピン変換年次報告会, Jan. 2016, Not invited

Magnetic/Metallic Thickness Dependency of All-Optical Magnetization Switching in Multilayered GdFeCo Thin Films
H. Yoshikawa; S. Terashita; R. Ueda; S. E. Moussaoui; and A. Tsukamoto
The Materials Research Society of Japan (MRS-J) 第26回日本MRS年次大会, Dec. 2015, Not invited

Thickness dependency of Static and Dynamic Magnetic Properties in GdFeCo Ferrimagnet with Anti-Parallel Coupled Sub-lattice Magnetization
R. Ueda; H. Yoshikawa; T. Sato; A. Tsukamoto
The Materials Research Society of Japan (MRS-J) 第26回日本MRS年次大会, Dec. 2015, Not invited

THE MAGNETIC LAYER THICKNESS DEPENDENCY OF ALL-OPTICAL MAGNETIZATION SWITCHING IN GdFeCo THIN FILMS
H. Yoshikawa; S. Terashita; R. Ueda; S. E. Moussaoui; and A. Tsukamoto
Magnetics and Optics Research International Symposium (MORIS) 2015, Nov. 2015, Not invited

Ultrafast Demagnetization in Gd23Fe77-xCox
S. E. Moussaoui; H. Yoshikawa; T. Sato; A. Tsukamoto
Magnetics and Optics Research International Symposium (MORIS) 2015, Nov. 2015, Not invited

LARGE THICKNESS DEPENDENCY OF STATIC AND DYNAMIC MAGNETIC PROPERTIES IN FERRIMAGNETIC GdFeCo THIN FILMS
R. Ueda; H. Yoshikawa; T. Sato; A. Tsukamoto
Magnetics and Optics Research International Symposium (MORIS) 2015, Nov. 2015, Not invited

磁性超薄膜における超短パルスレーザー誘起全光型磁化反転
吉川大貴
文科省・私立大学戦略的研究基盤形成支援事業「超短時間光・物質相互作用の理解・制御が切り開く新材料・物性・デバイスの探索と創生」平成27年度シンポジウム・研究報告会, Oct. 2015, Not invited

全光型磁化反転の磁性層膜厚依存性
吉川大貴; 寺下進之佑; 植田涼平; S. EL Moussaoui; 佐藤哲也; 塚本新
第39回日本磁気学会学術講演会, Sep. 2015, Not invited

Optically Induced Demagnetization in Gd23Fe77-xCox
S. El Moussaoui; H. Yoshikawa; Tetsuya Sato; A. Tsukamoto
第39回日本磁気学会学術講演会, Sep. 2015, Not invited

誘電体中間層を有するGdFeCo二層膜における全光型磁化反転現象
寺下進之佑; 吉川大貴; 佐藤哲也; 塚本新
第39回日本磁気学会学術講演会, Sep. 2015, Not invited

希土類遷移金属GdFeCoフェリ磁性薄膜における磁気静特性及び磁化動特性の膜厚依存性
植田涼平; 吉川大貴; 塚本新
第39回日本磁気学会学術講演会, Sep. 2015, Not invited

Gd / FeCo超格子膜における磁化ダイナミクスと磁気異方性の相関
佐藤哲也; 塚本新; 吉川大貴; 若林敬造; 渡邊昭廣
第39回日本磁気学会学術講演会, Sep. 2015, Not invited

Ultrafast energy diffusivity dependency of all-optical magnetization switching in multi-layer structured GdFeCo thin films
H. Yoshikawa and A. Tsukamoto
20th International Conference on Magnetism (ICM), Sep. 2015, Not invited

全光型磁化反転形成磁区のGdFeCo薄膜隣接層構成依存性
吉川大貴; 佐藤哲也; 塚本新
第62回応用物理学会春季学術講演会, Mar. 2015, Not invited

多層膜におけるエネルギー散逸および全光型磁化反転の層構成依存性
塚本新; 佐藤哲也; 塚本新
新学術領域ナノスピン変換科学 平成26年度スピン変換年次報告会, Mar. 2015, Not invited

Stractual Dependent Efficiency of All-Optical Magnetization Switching on Multi-Layered Films
H. Yoshikawa; T. Sato; A. Tsukamoto; and A. Itoh
59th Annual Magnetism & Magnetic Materials Conference (MMM), Nov. 2014, Not invited

All-Optical manipulation of sub-lattice magnetic system by femtosecond pulsed laser
A. Tsukamoto; H. Yoshikawa; T. Sato and A. Itoh
59th Annual Magnetism & Magnetic Materials Conference (MMM), Nov. 2014, Not invited

Thermally Assisted Magnetic Recording Applying Localized Plasmon Effect with Ultra Short Laser Pulse
H. Mano; H. Yoshikawa; Y. Ashizawa; A. Tsukamoto; Y. Sasaki; S. Saito; M. Takahashi; S. Ohnuki and K. Nakagawa
IcAUMS2014 (The 3rd International Conference of Asian Union of Magnetics Societies), Oct. 2014, Not invited

超短パルスレーザによる局所プラズモン効果を用いた熱アシスト磁気記録
眞野敬史; 吉川大貴; 芦澤好人; 塚本新; 佐々木有三; 斉藤伸; 高橋研; 大貫進一郎; 中川活二
第38回日本磁気学会学術講演会, Sep. 2014, Not invited

GdFeCo二層膜における超短パルス光照射極短時間加熱・熱拡散過程の誘電体中間層厚依存性
佐藤哲也; 吉川大貴; 塚本新; 伊藤彰義
第38回日本磁気学会学術講演会, Sep. 2014, Not invited

全光型磁化反転応答特性の試料多層構造依存性
吉川大貴; 佐藤哲也; 塚本新; 伊藤彰義
第38回日本磁気学会学術講演会, Sep. 2014, Not invited

全光型超短熱パルス誘起磁化反転のGdFeCo副格子磁化依存性
吉川大貴; 塚本新; 伊藤彰義
電子情報通信学会 磁気記録・情報ストレージ (MRIS) 研究会, Jul. 2014, Not invited

ULTRAFAST HEAT PULSE MAGNETIZATION SWITCHING NEAR COMPENSATION COMPOSITION IN GdFeCo
Magnetics and Optics Research International Symposium 2013, Dec. 2013, Not invited

Contribution of Magnetic Circular Dichroism in All-Optical Light Helicity-Depenfent Magnetic Switching
A. Tsukamoto; S. Kogure; H. Yoshikawa; T. Sato; and A. Itoh
International Conference UMC 2013, Nov. 2013, Not invited

Contribution of Magnetic Circular Dichroism in Helicity-Depenfent All-Optical Magnetization Switching
A. Tsukamoto; S. Kogure; H. Yoshikawa; T. Sato; and A. Itoh
JEMS 2013, Aug. 2013, Not invited

Jan. 2015 - Present
The Japan Society of Applied Physics

Jun. 2012 - Present
Magnetic Society of Hapan

2021
the Institute of Electrical Engineers of Japan

Optical Spin Conversion
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 10 Jul. 2014 - 31 Mar. 2019
Oiwa Akira; HASEGAWA Shigehiko; KIYAMA Haruki; FUJITA Takafumi; IIHAMA Satoshi; KASATANI Yuichi; YOSHIKAWA Hiroki

超短時間多層磁性薄膜内エネルギー散逸過程と全光型磁化反転機構の解明
Japan Society for the Promotion of Science, 特別研究員, Apr. 2016 - Mar. 2018