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Ding, H.*; Ito, Keita*; Endo, Yasushi*; Takanashi, Koki; Seki, Takeshi*
Journal of Physics D; Applied Physics, 57(38), p.385002_1 - 385002_10, 2024/09
Times Cited Count:0 Percentile:0.00(Physics, Applied)Takanashi, Koki; Seki, Takeshi*
Magune, 19(3), p.100 - 106, 2024/06
Perpendicular magnetic anisotropy of thin films currently plays an important role in spintronics as well as magnetic recording. Regarding perpendicular magnetic anisotropy, in this article, the fundamentals, the research history, and the recent research trends are reviewed, showing specific examples with perpendicular magnetization such as magnetic multilayers, ordered alloy films, rare earth-transition metal amorphous alloy films, and inhomogeneous or granular films. The physical origins for perpendicular magnetic anisotropy, including interface anisotropy due to structural symmetry breaking, magnetoelastic anisotropy due to strain, bulk-type magnetocrystalline anisotropy, and directional pair ordering of atoms, are discussed in each example.
Seki, Takeshi*; Uchida, Kenichi*; Takanashi, Koki
Journal of Physics; Condensed Matter, 36(33), p.333001_1 - 333001_11, 2024/05
Times Cited Count:0 Percentile:0.00(Physics, Condensed Matter)Nishio, Takahiro*; Ito, Keita*; Kura, Hiroaki*; Takanashi, Koki; Yanagihara, Hideto*
Journal of Alloys and Compounds, 976, p.172992_1 - 172992_8, 2024/03
Times Cited Count:2 Percentile:42.11(Chemistry, Physical)Yamazaki, Takumi*; Hirai, Takamasa*; Yagi, Takashi*; Yamashita, Yuichiro*; Uchida, Kenichi*; Seki, Takeshi*; Takanashi, Koki
Physical Review Applied (Internet), 21(2), p.024039_1 - 024039_11, 2024/02
Times Cited Count:2 Percentile:87.42(Physics, Applied)Nabialek, A.*; Chumak, O.*; Seki, Takeshi*; Takanashi, Koki; Baczewski, L. T.*; Szymczak, H.*
IEEE Transactions on Magnetics, 59(11), p.2501405_1 - 2501405_5, 2023/11
Times Cited Count:1 Percentile:28.99(Engineering, Electrical & Electronic)Hirohata, Atsufumi*; Lloyd, D. C.*; Kubota, Takahide*; Seki, Takeshi*; Takanashi, Koki; Sukegawa, Hiroaki*; Wen, Z.*; Mitani, Seiji*; Koizumi, Hiroki*
IEEE Access, 11, p.117443 - 117459, 2023/10
Times Cited Count:1 Percentile:0.00(Computer Science, Information Systems)Yamazaki, Takumi*; Seki, Takeshi*; Kubota, Takahide*; Takanashi, Koki
Applied Physics Express, 16(8), p.083003_1 - 083003_4, 2023/08
Times Cited Count:0 Percentile:0.00(Physics, Applied)Takanashi, Koki
Materia, 62(5), p.301 - 306, 2023/05
no abstracts in English
Masuda, Hiroto*; Yamane, Yuta*; Seki, Takeshi*; Raab, K.*; Dohi, Takaaki*; Modak, R.*; Uchida, Kenichi*; Ieda, Junichi; Klui, M.*; Takanashi, Koki
Applied Physics Letters, 122(16), p.162402_1 - 162402_7, 2023/04
Times Cited Count:2 Percentile:24.19(Physics, Applied)Zhou, Z.*; Frost, W.*; Lloyd, D. C.*; Seki, Takeshi*; Kubota, Takahide*; Ramos, R.*; Saito, Eiji; Takanashi, Koki; Hirohata, Atsufumi*
Journal of Magnetism and Magnetic Materials, 571, p.170575_1 - 170575_5, 2023/04
Times Cited Count:1 Percentile:0.00(Materials Science, Multidisciplinary)Shigeta, Iduru*; Oku, Shuta*; Kubota, Takahide*; Kimura, Shojiro*; Seki, Takeshi*; Shinozaki, Bunju*; Awaji, Satoshi*; Takanashi, Koki; Hiroi, Masahiko*
AIP Advances (Internet), 13(2), p.025116_1 - 025116_5, 2023/02
Times Cited Count:0 Percentile:0.00(Nanoscience & Nanotechnology)Masuda, Hiroto*; Seki, Takeshi*; Yamane, Yuta*; Modak, R.*; Uchida, Kenichi*; Ieda, Junichi; Lau, Y.-C.*; Fukami, Shunsuke*; Takanashi, Koki
Physical Review Applied (Internet), 17(5), p.054036_1 - 054036_9, 2022/05
Times Cited Count:7 Percentile:64.62(Physics, Applied)The antisymmetric interlayer exchange coupling (AIEC) was recently discovered, playing pivotal roles in magnetization switching of a synthetic antiferromagnet (SAF) through inducing magnetization canting. Large AIEC is reported for perpendicularly magnetized Pt/Co/Ir/Co/Pt with wedge-shaped layers. The effective field of the AIEC is related with symmetric interlayer exchange coupling, providing guides to enhance the AIEC. We develop an extended Stoner-Wohlfarth model for a SAF, revealing key factors in its magnetization switching. Combining the theoretical knowledge and the experimental results, perpendicular magnetization switching is achieved solely by an in-plane magnetic field.
Kubota, Takahide*; Takano, Daichi*; Kota, Yohei*; Mohanty, S.*; Ito, Keita*; Matsuki, Mitsuhiro*; Hayashida, Masahiro*; Sun, M.*; Takeda, Yukiharu; Saito, Yuji; et al.
Physical Review Materials (Internet), 6(4), p.044405_1 - 044405_12, 2022/04
Times Cited Count:5 Percentile:43.81(Materials Science, Multidisciplinary)Kubota, Takahide*; Shimada, Yusuke*; Tsuchiya, Tomoki*; Yoshikawa, Tomoki*; Ito, Keita*; Takeda, Yukiharu; Saito, Yuji; Konno, Toyohiko*; Kimura, Akio*; Takanashi, Koki*
Nanomaterials (Internet), 11(7), p.1723_1 - 1723_11, 2021/07
Times Cited Count:2 Percentile:13.44(Chemistry, Multidisciplinary)Frost, W.*; Seki, Takeshi*; Kubota, Takahide*; Ramos, R.*; Saito, Eiji; Takanashi, Koki*; Hirohata, Atsufumi*
Applied Physics Letters, 118(17), p.172405_1 - 172405_5, 2021/04
Times Cited Count:1 Percentile:5.74(Physics, Applied)Zhou, W.*; Seki, Takeshi*; Imamura, Hiroshi*; Ieda, Junichi; Takanashi, Koki*
Physical Review B, 100(9), p.094424_1 - 094424_5, 2019/09
Times Cited Count:7 Percentile:34.12(Materials Science, Multidisciplinary)Tsuchiya, Tomoki*; Kobayashi, Ryota*; Kubota, Takahide*; Saito, Kotaro*; Ono, Kanta*; Ohara, Takashi; Nakao, Akiko*; Takanashi, Koki*
Journal of Physics D; Applied Physics, 51(6), p.065001_1 - 065001_7, 2018/02
Times Cited Count:10 Percentile:43.16(Physics, Applied)Takata, Fumiya*; Ito, Keita*; Takeda, Yukiharu; Saito, Yuji; Takanashi, Koki*; Kimura, Akio*; Suemasu, Takashi*
Physical Review Materials (Internet), 2(2), p.024407_1 - 024407_5, 2018/02
Times Cited Count:14 Percentile:45.49(Materials Science, Multidisciplinary)Uchida, Kenichi*; Kikkawa, Takashi*; Seki, Takeshi*; Oyake, Takafumi*; Shiomi, Junichiro*; Qiu, Z.*; Takanashi, Koki*; Saito, Eiji
Physical Review B, 92(9), p.094414_1 - 094414_6, 2015/09
Times Cited Count:93 Percentile:93.62(Materials Science, Multidisciplinary)