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首藤 浩文

首藤 浩文 (SUTO, Hirofumi) 0000-0003-4387-5862

Address
305-0047 茨城県つくば市千現1-2-1 [アクセス]

[論文] | [書籍] | [会議録] | [口頭発表] | [その他の文献] | [公開特許出願]

論文 TSV

2025
  1. P. D. Bentley, Y. Sasaki, I. Suzuki, S. Isogami, Y. K. Takahashi, H. Suto. Development of L10-ordered FePt with low damping and large perpendicular magnetic anisotropy by engineering the nanostructure. Applied Physics Letters. 126 [2] (2025) 022404 10.1063/5.0246369 Open Access
2024
  1. P. Tozman, S. Isogami, I. Suzuki, A. Bolyachkin, H. Sepehri-Amin, S.J. Greaves, H. Suto, Y. Sasaki, T.Y. Chang, Y. Kubota, P. Steiner, P.W. Huang, K. Hono, Y.K. Takahashi. Dual-layer FePt-C granular media for multi-level heat-assisted magnetic recording. Acta Materialia. 271 (2024) 119869 10.1016/j.actamat.2024.119869 Open Access
  2. Dolly Taparia, Taisuke Sasaki, Tomoya Nakatani, Hirofumi Suto, Yoshio Miura, Zehao Li, Varun Kumar Kushwaha, Kazuumi Inubushi, Shinto Ichikawa, Katsuyuki Nakada, Tomoyuki Sasaki, Seiji Mitani, Yuya Sakuraba. Improvement in CPP-GMR read head sensor performance using [001]-oriented polycrystalline half-metallic Heusler alloy Co 2 FeGa 0.5 Ge 0.5 and CoFe bilayer electrode. Science and Technology of Advanced Materials. 25 [1] (2024) 2388503 10.1080/14686996.2024.2388503 Open Access
  3. Z.H. Li, H. Suto, V. Barwal, K. Masuda, T.T. Sasaki, Z.X. Chen, H. Tajiri, L.S.R. Kumara, T. Koganezawa, K. Amemiya, S. Kokado, K. Hono, Y. Sakuraba. Enhancing atomic ordering, magnetic and transport properties of Mn2VGa Heusler alloy thin films toward negatively spin-polarized charge injection. Acta Materialia. 276 (2024) 120110 10.1016/j.actamat.2024.120110
  4. Murali Krishnan Manikketh, Prabhanjan D. Kulkarni, Tomoya Nakatani, Hirofumi Suto, Yuya Sakuraba. Effects of layer thickness and annealing process on low-frequency noise and detectivity in tunnel magnetoresistive sensors with CoFeSiB soft magnetic layers. Journal of Applied Physics. 136 [20] (2024) 203901 10.1063/5.0231800 Open Access
  5. Hirofumi Suto, Vineet Barwal, Keisuke Masuda, Kodchakorn Simalaotao, Taisuke Sasaki, Yoshio Miura, Hiroo Tajiri, Loku Singgappulige Rosantha Kumara, Tomoyuki Koganezawa, Yuya Sakuraba. Negative spin polarization and effect of composition on the atomic order and electronic structure of Mn2VAl Heusler alloy thin films. Physical Review Materials. 8 [11] (2024) 114408 10.1103/physrevmaterials.8.114408 Open Access
  6. Vineet Barwal, Hirofumi Suto, Ryo Toyama, Kodchakorn Simalaotao, Taisuke Sasaki, Yoshio Miura, Yuya Sakuraba. Large magnetoresistance and high spin-transfer torque efficiency of Co2MnxFe1−xGe (0 ≤ x ≤ 1) Heusler alloy thin films obtained by high-throughput compositional optimization using combinatorially sputtered composition-gradient film. APL Materials. 12 [11] (2024) 111114 10.1063/5.0226638 Open Access
  7. Dolly Taparia, Taisuke T. Sasaki, Tomoya Nakatani, Hirofumi Suto, Seiji Mitani, Yuya Sakuraba. Growth of [001]-oriented polycrystalline Heusler alloy thin films using [001]-textured Ag buffer layer on thermally oxidized Si substrate for spintronics applications. Journal of Applied Physics. 136 [12] (2024) 123906 10.1063/5.0218648 Open Access
  8. Simon John Greaves, Hirofumi Suto, Yasuaki Nakamura, Yasushi Kanai. Effect of Curie Temperature Distributions on the User Areal Density of Heat-Assisted Magnetic Recording. IEEE Transactions on Magnetics. 60 [9] (2024) 3200605 10.1109/tmag.2024.3400615
  9. Hirofumi Suto, Vineet Barwal, Kodchakorn Simalaotao, Zehao Li, Keisuke Masuda, Taisuke Sasaki, Yoshio Miura, Yuya Sakuraba. Negative spin polarization of Mn2VGa Heusler alloy thin films studied in current-perpendicular-to-plane giant magnetoresistance devices. Journal of Applied Physics. 135 [20] (2024) 203901 10.1063/5.0207980 Open Access
  10. Tomoya Nakatani, Prabhanjan D. Kulkarni, Hirofumi Suto, Keisuke Masuda, Hitoshi Iwasaki, Yuya Sakuraba. Perspective on nanoscale magnetic sensors using giant anomalous Hall effect in topological magnetic materials for read head application in magnetic recording. Applied Physics Letters. 124 [7] (2024) 070501 10.1063/5.0191974 Open Access
2023
  1. Vineet Barwal, Hirofumi Suto, Tomohiro Taniguchi, Yuya Sakuraba. Detailed and high-throughput measurement of composition dependence of magnetoresistance and spin–transfer torque using a composition-gradient film: application to Co x Fe 1- x (0 ≤ x ≤ 1) system. Science and Technology of Advanced Materials: Methods. 3 [1] (2023) 2286944 10.1080/27660400.2023.2286944 Open Access
  2. Tomoya Nakatani, Hirofumi Suto, Prabhanjan D. Kulkarni, Hitoshi Iwasaki, Yuya Sakuraba. Improvement of magnetic field detectivity in electrical 1/f noise-dominated tunnel magnetoresistive sensors by AC magnetic field modulation technique. Journal of Applied Physics. 134 [21] (2023) 213904 10.1063/5.0180812 Open Access
  3. Hirofumi Suto, Tomoya Nakatani, Nagarjuna Asam, Hitoshi Iwasaki, Yuya Sakuraba. Evaluation of spin-transfer-torque efficiency using magnetization reversal against a magnetic field: comparison of FeCr with negative spin polarization and NiFe. Applied Physics Express. 16 [1] (2023) 013003 10.35848/1882-0786/acb310
2022
  1. Zixi Chen, Yuya Sakuraba, Yoshio Miura, Zehao Li, Taisuke Sasaki, Hirofumi Suto, Varun K. Kushwaha, Tomoya Nakatani, Seiji Mitani, Kazuhiro Hono. Phase stability and half-metallic character of off-stoichiometric Co2FeGa0.5Ge0.5 Heusler alloys. Journal of Applied Physics. 132 [18] (2022) 183902 10.1063/5.0109802
  2. Tomoya Nakatani, Hirofumi Suto, Prabhanjan D. Kulkarni, Hitoshi Iwasaki, Yuya Sakuraba. Tunnel magnetoresistance sensors with symmetric resistance-field response and noise properties under AC magnetic field modulation. Applied Physics Letters. 121 [19] (2022) 192406 10.1063/5.0119677
  3. Hirofumi Suto, Tomoya Nakatani, Yohei Kota, Nagarjuna Asam, Hitoshi Iwasaki, Kenta Amemiya, Takaya Mitsui, Seiji Sakai, Songtian Li, Yuya Sakuraba. Study on FeCr thin film for a spintronic material with negative spin polarization. Journal of Magnetism and Magnetic Materials. 557 (2022) 169474 10.1016/j.jmmm.2022.169474
  4. Nobuaki Kikuchi, Katsunari Sato, Satoshi Okamoto, Osamu Kitakami, Takehito Shimatsu, Hirofumi Suto. Thermal activation in microwave-assisted magnetization switching and its effect on the switching behavior of granular media. Physical Review B. 105 [5] (2022) 054430 10.1103/physrevb.105.054430
2021
  1. Nagarjuna Asam, Hirofumi Suto, Shingo Tamaru, Hossein Sepehri-Amin, Anton Bolyachkin, Tomoya Nakatani, Weinan Zhou, Hitoshi Kubota, Yuya Sakuraba. Analysis method of a spin-torque oscillator using dc resistance change during injection locking to an external microwave magnetic field. Applied Physics Letters. 119 [14] (2021) 142405 10.1063/5.0058847
  2. Hirofumi Suto, Hossein Sepehri-Amin, Nagarjuna Asam, Weinan Zhou, Anton Bolyachkin, Masayuki Takagishi, Naoyuki Narita, Shingo Tamaru, Tomoya Nakatani, Yuya Sakuraba. Analysis of an all-in-plane spin-torque oscillator using injection locking to an external microwave magnetic field. Applied Physics Express. 14 [5] (2021) 053001 10.35848/1882-0786/abf667 Open Access

書籍 TSV

会議録 TSV

口頭発表 TSV

2024
  1. MAKINO, Fuya, HIRAI, Takamasa, 志賀 拓麿, SUTO, Hirofumi, 藤久 裕司, 大柳 洸一, 小林 悟, SASAKI, Taisuke, 八木 貴志, UCHIDA, Kenichi, SAKURABA, Yuya. Enhancement of thermal conductivity change induced by magneto-thermal resistance effect in CoFe/Cu magnetic multilayers. The IEEE Around-the-Clock Around-the-Globe Magnetics Conference . 2024
  2. BENTLEY, Phillip, SASAKI, Yuta, ISOGAMI, Shinji, SUZUKI, Ippei, TAKAHASHI, Yukiko, SUTO, Hirofumi. Low damping in L10 FePt by controlling the number of misfit dislocations. 第48回　日本磁気学会学術講演会. 2024
  3. 首藤 浩文, バルワル ビニート, 増田 啓介, シマラオタオ コチャコン, 佐々木 泰祐, 三浦 良雄, 田尻 寛男, クマーラ ロシャンタ, 小金澤 智之, 桜庭 裕弥. Mn₂VAlホイスラー合金の負のスピン分極率：規則化と電子状態に対する組成の影響. 第48回 日本磁気学会学術講演会. 2024
  4. 牧野 楓也, 平井 孝昌, 志賀拓麿, 首藤 浩文, 藤久裕司, 大柳洸一, 小林悟, 佐々木 泰祐, 八木貴志, 内田 健一, 桜庭 裕弥. CoFe/Cu多層膜の磁気熱抵抗効果による巨大熱伝導率変化. 日本磁気学会学術講演会. 2024
  5. 佐々木 悠太, ベントレー フィリップ デビッド, 中澤 克昭, 磯上 慎二, 首藤 浩文, 高橋 有紀子. L10-FePt薄膜のダンピング定数と微細ナノ構造の詳細解析. 日本金属学会2024年秋期(第175回)講演大会. 2024
  6. SASAKI, Yuta, BENTLEY, Phillip, SUZUKI, Ippei, MANDAL, Ruma, KASAI, Shinya, SUTO, Hirofumi, TAKAHASHI, Yukiko. Lattice distortion and magnetization dynamics for L10-FePt films at elevated temperatures. The 35th Magnetic Recording Conference TMRC2024. 2024 招待講演
  7. SUTO, Hirofumi, BARWAL, Vineet, SIMALAOTAO, Kodchakorn, LI, Zehao, MASUDA, Keisuke, SASAKI, Taisuke, MIURA, Yoshio, SAKURABA, Yuya. Mn2VGa and Mn2VAl Heusler alloys with negative spin polarizationfor efficient spin-transfer-torque-based devices. TMRC 2024 (The 35th Magnetic Recording Conference). 2024 招待講演
  8. BENTLEY, Phillip, SASAKI, Yuta, ISOGAMI, Shinji, SUZUKI, Ippei, TAKAHASHI, Yukiko, SUTO, Hirofumi. Magnetization precession in L10-ordered FePt thin films with large PMA and relatively low damping. MORIS2024（Magnetics and Optics Research International Symposium 2024）. 2024
  9. 中川 碧, 遠山 諒, 首藤 浩文, 桜庭 裕弥, 神田 哲典. 不規則構造Fe-Ga合金薄膜における異常ホール効果の起源の解析. 第71回応用物理学会春季学術講演会. 2024
  10. NAKATANI, Tomoya, KULKARNI, Prabhanjan Dilip, SUTO, Hirofumi, IWASAKI, Hitoshi, SAKURABA, Yuya. Simulation-based design of anomalous Hall effect read sensors. 第71回応用物理学会春季学術講演会. 2024
  11. 松田 華奈, 神田 哲典, 首藤 浩文. ST-FMR測定に向けたCoGd合金薄膜の補償点組成付近の試料作製とその評価. 電気学会中国支部 第16回高専研究発表会. 2024
  12. 首藤 浩文. データセンターを支える磁気記録デバイスの高記録密度化にむけた高周波ナノスピントロ二クスデバイスの研究 . SATテクノロジーショーケース2024. 2024 招待講演
2023
  1. NAKATANI, Tomoya, SUTO, Hirofumi, KULKARNI, Prabhanjan Dilip, IWASAKI, Hitoshi, SAKURABA, Yuya. Tunnel magnetoresistance sensors with even-function resistance-magnetic field response. SPIE Spintronics XVI. 2023 招待講演
  2. NAKATANI, Tomoya, KULKARNI, Prabhanjan Dilip, MANIKKETH, Murali Krishnan, IWASAKI, Hitoshi, SUTO, Hirofumi, SAKURABA, Yuya. Read Sensors Using Anomalous Hall Effect. The 34th Magnetic Recording Conference . 2023 招待講演
  3. 首藤 浩文, 中谷 友也, アサム ナガルシュナ, 岩崎 仁志, 桜庭 裕弥, 小田洋平, 雨宮健太, 三井隆也, 境誠司, Li Songtian. 負のスピン分極を有するFeCr合金のスピントロニクス応用とメスバウアー分光法による解析. 第22回 メスバウアー分光研究会 シンポジウム. 2023
  4. NAKATANI, Tomoya, SUTO, Hirofumi, KULKARNI, Prabhanjan Dilip, IWASAKI, Hitoshi, SAKURABA, Yuya. AC magnetic field modulation on tunnel magnetoresistance sensors with even-function resistance-field response. Intermag 2023. 2023
  5. SUTO, Hirofumi, BARWAL, Vineet, LI, Zehao, MASUDA, Keisuke, SASAKI, Taisuke, SAKURABA, Yuya. Negative spin polarization of Mn2VGa Heusler alloy thin film studied in current-perpendicular-to-plane giant magnetoresistance devices. Intermag 2023. 2023
  6. タパリア ドリー, SASAKI, Taisuke, NAKATANI, Tomoya, SUTO, Hirofumi, MIURA, Yoshio, LI, Zehao, KUSHWAHA, Varun Kumar, K. Inubushi, S. Ichikawa, K. Nakada, T. Sasaki, MITANI, Seiji, SAKURABA, Yuya. Large spin-dependent scattering at half metallic Co2FeGa0.5Ge0.5 Heusler alloy and CoFe polycrystalline interface​. INTERMAG 2023. 2023
2022
  1. LI, Zehao, SUTO, Hirofumi, BARWAL, Vineet, MASUDA, Keisuke, SASAKI, Taisuke, 田尻 寛男, Kumara Rosantha, 小金澤 智之, 雨宮 健太, SAKURABA, Yuya, HONO, Kazuhiro. Microstructure and transport properties in MnVGa Heusler alloy thin films. 日本金属学会 2022年秋期 第171回講演大会. 2022
  2. NAKATANI, Tomoya, KULKARNI, Prabhanjan Dilip, IWASAKI, Hitoshi, SUTO, Hirofumi, SAKURABA, Yuya. Magnetic recording read sensors using anomalous Hall effect. 第83回応用物理学会秋季学術講演会. 2022
  3. SUTO, Hirofumi, NAKATANI, Tomoya, ASAM, Nagarjuna, IWASAKI, Hitoshi, SAKURABA, Yuya. Evaluation of spin-transfer-torque efficiency of FeCr with negative spin polarization using magnetization reversal against a magnetic field. 第83回応用物理学会秋季学術講演会 https://meeting.jsap.or.jp/. 2022
  4. 中谷 友也, クルカルニ プラバンジャン ディリプ, 岩崎 仁志, 首藤 浩文, 桜庭 裕弥. 異常ホール効果を用いたHDD用リードセンサの検討. 第46回日本磁気学会学術講演会 https://www.magnetics.jp/kouenkai/2022/. 2022
  5. SUTO, Hirofumi, ASAM, Nagarjuna, 田丸 慎吾, SEPEHRI AMIN, Hossein, BOLYACHKIN, Anton, ZHOU, Weinan, NAKATANI, Tomoya, 久保田 均, SAKURABA, Yuya. Analysis of a spin-torque oscillator using injection locking to an external microwave field. 24th International Colloquium on Magnetic Films and Surfaces (ICMFS2022) https://icmfs2022.jp/. 2022
2021
  1. 首藤 浩文, アサム ナガルシュナ, 田丸　慎吾, セペリ アミン ホセイン, ボリャーチキン アントーン, 中谷 友也, 周 偉男, 久保田 均, 桜庭 裕弥. マイクロ波磁界印加によるinjection lockingを利用した スピントルク発振素子の磁化ダイナミクス解析. 磁気記録・情報ストレージ研究会（MRIS） https://www.ieice.org/ken/program/index.php?tgs_regid=6347033ba7e2cf709429158c719c1c41328bf92a66c8a0cac8b7b5c1a9b99ca8&tgid=IEICE-MRIS. 2021
  2. 首藤 浩文, アサム ナガルシュナ, 田丸　慎吾, セペリ アミン ホセイン, ボリャーチキン アントーン, 周 偉男, 中谷 友也, 久保田 均, 桜庭 裕弥. マイクロ波磁界印加によるinjection lockingを利用したスピントルク発振素子の磁化ダイナミクス解析. 第45回日本磁気学会学術講演会. 2021
  3. 首藤 浩文, アサム ナガルシュナ, 田丸 慎吾, セペリ アミン 那仁, ボリャーチキン アントーン, 中谷 友也, 周 偉男, 久保田 均, 桜庭 裕弥. Analysis of a spin-torque oscillator using injection locking to an external microwave field. The 32nd Magnetic Recording Conference (TMRC2021). 2021 招待講演
  4. アサム ナガルシュナ, 首藤 浩文, Tamaru Shingo, セペリ アミン ホセイン, 中谷 友也, 周 偉男, Hitoshi Kubota, 桜庭 裕弥. Characterizing the oscillation frequency of a spin-torque oscillator (STO) by measuring the change of dc resistance upon injection locking to an external RF magnetic field. INTERMAG2021　/　https://intermag.org . 2021

その他の文献 TSV

公開特許出願 TSV

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