Spintronics introduction for KOSEN students - Quantum mechanics and ultimate electronics -
Ken-ichiro Sakai and Tsuyoshi Yoshitake
九州大学低温センターだより, 16, 6-10 (2022).

高専生のためのスピントロニクス入門 −巨大磁気抵抗(GMR)効果とトンネル磁気抵抗(TMR)効果−
堺研一郎，奥山哲也，三木弘史，村上秀樹，大曲新矢，吉武剛
久留米高専紀要, 36, 25 (2021).

Spin-Valve Effects in Fe/N-Doped Carbon/Fe3Si Trilayered Films
Takuya Sakai, Takeru Hamasaki, Kazuki Kudo, Ken-ichiro Sakai, Hiroyuki Deguchi, and Tsuyoshi Yoshitake
JJAP Conf. Proc. 8, 011202 (2020).
doi: 10.7567/JJAPCP.8.011202

鉄シリサイド材料による新規スピントロニクス素子の創製
堺研一郎，坂井拓也，石本浩起，田部井哲夫，西嶋雅彦，吉武剛
電子情報通信学会，信学技報 (IEICE Technical Report), MRIS2019-27 (2019-10).
映像情報メディア学会，映情学技報，Vol. 43, No. 33, 71 (2019).

Hiroki Ishimoto, Kazuki Kudo, Tetsuo Tabei, Kazushi Okada, Shinji Yamada, Tadashi Sato, Ken-ichiro Sakai, and Tsuyoshi Yoshitake
Fabrication of lateral-type spin-valve comprising FeSi2 spin-transfer layers by electron beam lithography
J. Phys. Conf. Series, to be published.

Kazuki Kudo, Satoshi Takeichi, Kazutoshi Nakashima, Ken-ichiro Sakai, and Tsuyoshi Yoshitake
Magnetoresistance Effects in Spin-Valves Comprising N-Doped Carbon Interlayers
11th International Symposium on Atomic Level Characterizations for New Materials and Devices ’17 (ALC17) Proceedings (2017) pp. 79-81.

Kazuki Kudo, Satoshi Takeichi, Kazutoshi Nakashima, Ken-ichiro Sakai, Masahiko Nishijima, and Tsuyoshi Yoshitake
Structural Evaluations of Fe/Boron-Doped Carbon/Fe3Si Spin-Valve Junctions
11th International Symposium on Atomic Level Characterizations for New Materials and Devices ’17 (ALC17) Proceedings (2017) pp. 64-66.

Kazuki Kudo, Satoshi Takeichi, Kazutoshi Nakashima, Ken-ichiro Sakai, and Tsuyoshi Yoshitake
Magnetoresistance effects in Fe/nanodiamond/Fe3Si trilayered junctions at room temperature
Proceedings of the Cross Straits Symposium on Energy and Environmental Science and Technology (2017) pp. 202-203.

Kazuki Kudo, Kazutoshi Nakashima, Satoshi Takeichi, Rezwan Ahmed, Seigi Mizuno, Ken-ichiro Sakai, Masahiko Nishijima, and Tsuyoshi Yoshitake
Film Structures of Fe/B-doped Carbon/Fe3Si Spin Valve Junctions
JJAP Conf. Proc. 5, 011502 (2017).
doi: 10.7567/JJAPCP.5.011502

Kazuya Ishibashi, Kazuki Kudo, Kazutoshi Nakashima, Yuki Asai, Ken-ichiro Sakai, Hiroyuki Deguchi, and Tsuyoshi Yoshitake
Temperature-dependent Magnetoresistance Effects in Fe3Si/FeSi2/Fe3Si Trilayered Spin Valve Junctions
JJAP Conf. Proc. 5, 011501 (2017).
doi: 10.7567/JJAPCP.3.011501

Kazutoshi Nakashima, Kazuki Kudo, Satoshi Takeichi, Ken-ichiro Sakai, and Tsuyoshi Yoshitake
Spin valves comprising nitrogen-doped carbon interlayers
Proceedings of the 18th Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST 2016) pp. 45-46.

Rezwan Ahmed, Kazuki Kudo, Satoshi Takeichi, Ken-ichiro Sakai, Masahiko Nishijima, Tsuyoshi Yoshitake, and Seigi Mizuno
Fabrication of spin valve junctions comprising Fe3Si/B-doped carbon/Fe trilayers
Proceedings of the 18th Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST 2016) pp. 27-28.

Kazuya Ishibashi, Kazutoshi Nakashima, Ken-ichiro Sakai, and Tsuyoshi Yoshitake
Magnetic properties of Fe/FeSi2/Fe3Si trilayered films prepared by facing targets sputtering deposition
Conference Proceedings of 68th Annual Gaseous Electronics Conference/9th International Conference on Ractive Plasmas/33rd Symposium on Plasma Processing (2015) GT1.00151.

Kazuya Ishibashi, Kazutoshi Nakashima, Ken-ichiro Sakai, and Tsuyoshi Yoshitake
Fabrication of spin valve junctions based on Fe/Fe3Si/FeSi2/Fe3Si quadrilayered films by facing targets direct-current sputtering
Conference Proceedings of 68th Annual Gaseous Electronics Conference/9th International Conference on Ractive Plasmas/33rd Symposium on Plasma Processing (2015) WF2.00003.

Yuki Asai, Ken-ichiro Sakai, Kazuya Ishibashi, Kaoru Takeda, and Tsuyoshi Yoshitake
Spin Valve behavior in Current-Perpendicular-to-Plane Crossover Structural Fe3Si/FeSi2/Fe3Si Trilayered junctions
JJAP Conf. Proc. 3, 011504 (2015).
doi: 10.7567/JJAPCP.3.011504

Yuki Asai, Ken-ichiro Sakai, Kazuya Ishibashi, Kaoru Takeda, and Tsuyoshi Yoshitake
Fabrication of Spin Valve Junctions Based on Fe3Si/FeSi2/Fe3Si Trilayered films
JJAP Conf. Proc. 3, 011501 (2015).
doi: 10.7567/JJAPCP.3.011501

Ken-ichiro Sakai, Yuki Asai, Masayasu Takeda, Kazuya Ishibashi, Yuta Noda, Kaoru Takeda, and Tsuyoshi Yoshitake
Observation of magnetization alignment switching in Fe3Si/FeSi2 artificial lattices by polarized neutron reflection
JJAP Conf. Proc. 3, 011503 (2015).
doi: 10.7567/JJAPCP.3.011503

Ken-ichiro Sakai, Yuki Asai, Yuta Noda, Takeshi Daio, Aki Tominaga, Kaoru Takeda, and Tsuyoshi Yoshitake
Current-induced magnetization switching at low current densities in current-perpendicular-to-plane structural Fe3Si/FeSi2 artificial lattices with various cross-sectional areas
JJAP Conf. Proc. 3, 011502 (2015).
doi: 10.7567/JJAPCP.3.011502

学位論文
鉄シリサイド材料によるスピントロニクス素子の創製と評価
堺研一郎
九州大学大学院総合理工学府
量子プロセス理工学専攻
平成27年2月27日 (2015年2月27日)
博士 (工学)
総理工博甲第九三六号
博士論文指導教員
吉武剛准教授 (現教授)

Ken-ichiro Sakai, Yuki Asai, Yuta Noda, Kaoru Takeda, and Tsuyoshi Yoshitake
The fabrication of new spin device by Fe3Si/FeSi2/Fe3Si trilayer film
Proceedings of the 8th International Conference on Reactive Plasmas and 31th Symposium on Plasma Processing, 6P-AM-S10-P50 (2014).

Ken-ichiro Sakai, Yuta Noda, Takeshi Daio, Daiki Tsumagari, Aki Tominaga, Kaoru Takeda, and Tsuyoshi Yoshitake
Current-induced magnetization switching at low current densities in current-perpendicular-to-plane structural Fe3Si/FeSi2 artificial lattices
Jpn. J. Appl. Phys. 53, 02BC15 (2014).
doi: 10.7567/JJAP.53.02BC15

Ken-ichiro Sakai, Yuta Noda, Daiki Tsumagari, Hiroyuki Deguchi, Kaoru Takeda, and Tsuyoshi Yoshitake
Temperature-dependent interlayer coupling in Fe3Si/FeSi2 artificial lattices
Phys. Status Solidi A 211, 323-328 (2014).
doi: 10.1002/pssa.201330116

Ken-ichiro Sakai, Yuta Noda, Kaoru Takeda, Masayasu Takeda, and Tsuyoshi Yoshitake
Magnetoresistance effects in current-perpendicular-to-plane structures based on Fe3Si/FeSi2 artificial lattices
Phys. Status Solidi C 10, 1862-1865 (2013).
doi: 10.1002/pssc.201300322

Yuta Noda, Ken-ichiro Sakai, Takayuki Sonoda, Daiki Tsumagari, Kaoru Takeda, and Tsuyoshi Yoshitake
Fabrication of Current-Perpendicular-to-Plane Junctions Based on Fe3Si/FeSi2 Multilayered Films by Lift-Off
ECS Transactions, Vol. 50, issue 10 (2013) pp. 223-228.
doi: 10.1149/05010.0223ecst

Ken-ichiro Sakai, Takayuki Sonoda, Shin-ichi Hirakawa, Kaoru Takeda, and Tsuyoshi Yoshitake
Current-Induced Magnetization Switching in Fe3Si/FeSi2 Artificial Lattices
Jpn. J. Appl. Phys. 51, 028004 (2012).
doi: 10.1143/JJAP.51.028004

堺研一郎，平川信一，吉武剛
微細加工による強磁性金属Fe3Si/半導体FeSi2/強磁性金属Fe3Siスピン注入素子の創製
文部科学省先端研究施設共用イノベーション創出事業，九州地区ナノテクノロジー拠点ネットワーク，MEMS測定解析支援平成23年度成果報告書，88-89頁，2012.

Takayuki Sonoda, Yuta Noda, Shinichi Hirakawa, Kenichiro Sakai, Kaoru Takeda, and Tsuyoshi Yoshitake
Current-induced magnetization switching in Fe3Si/FeSi2 multilayered films
Proceedings of The 13th Cross Straits Symposium on Materials, Energy and Environment Sciences (2011) pp. 159-160.

中西剛司，���ｱ理一，武田薫，堺研一郎，平川信一，園田貴之，吉武剛
Fe3Si/FeSi2人工格子の高圧下における電気抵抗測定
福岡工業大学エレクトロニクス研究所所報，第28巻 (2011) 1-4頁．

Shin-ichi Hirakawa, Takayuki Sonoda, Ken-ichiro Sakai, Kaoru Takeda, and Tsuyoshi Yoshitake
Temperature-Dependent Current-Induced Magnetization Switching in Fe3Si/FeSi2/Fe3Si trilayered films
Jpn. J. Appl. Phys. 50, 08JD06 (2011).

Shin-ichi Hirakawa, Ken-ichiro Sakai, Takayuki Sonoda, Kaoru Takeda, and Tsuyoshi Yoshitake
Current-Induced Magnetization Switching in Fe3Si/FeSi2 Superlattices
Physics Proceida, Vol. 11 (2011) pp. 154-157.

Shin-ichi Hirakawa, Ken-ichiro Sakai, Kaoru Takeda, and Tsuyoshi Yoshitake
Temperature-Dependent Interlayer Couplings in Fe3Si/FeSi2 multilayers prepared by facing targets direct-current sputtering
Proceedings of 63rd Annual Gaseous Electronics Conference and 7th International Conference on Reactive Plasmas (2010) CTP-187.

Shin-ichi Hirakawa, Ken-ichiro Sakai, Kaoru Takeda, and Tsuyoshi Yoshitake
Fabrication of Fe3Si/FeSi2 Multilayers by Facing Targets Direct-Current Sputtering and The Magnetic Properties
Proceedings of 63rd Annual Gaseous Electronics Conference and 7th International Conference on Reactive Plasmas (2010) KWP-073.

平川信一，堺研一郎，武田薫，吉武剛
強磁性金属Fe3Si/半導体FeSi2人工格子におけるCPP素子の創製
北九州産業学術推進機構・九州シンクロトロン光研究センター合同シンポジウム「ものづくりと放射光応用技術が拓くナノワールド」実施報告書，52頁，2010.

Kenichiro Sakai, Shinichi Hirakawa, Kaoru Takeda, and Tsuyoshi Yoshitake
Current-induced magnetization switching in Fe3Si/FeSi2/Fe3Si trilayer films
Proceedings of The 11th Cross Straits Symposium on Materials, Energy and Environment Sciences (2008) pp. 165-166.