Novel torque magnetometry for uniaxial anisotropy constants of thin films and its application to FePt granular thin films

被引：17
|
作者：
Ono, Takuya [1 ,2 ]
Kikuchi, Nobuaki [3 ,4 ]
Okamoto, Satoshi [3 ,4 ]
Kitakami, Osamu [3 ,4 ]
Shimatsu, Takehito [2 ,4 ,5 ]
机构：
[1] Fuji Elect Co Ltd, Hino, Tokyo 1918502, Japan
[2] Tohoku Univ, Frontier Res Inst Interdisciplinary Sci FRIS, Sendai, Miyagi 9808578, Japan
[3] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan
[4] Tohoku Univ, Ctr Spintron Res Network, Sendai, Miyagi 9808577, Japan
[5] Tohoku Univ, Res Inst Elect Commun, Sendai, Miyagi 9808577, Japan
来源：
APPLIED PHYSICS EXPRESS | 2018年 / 11卷 / 03期
关键词：
MAGNETIC-ANISOTROPY; ELECTRODES;
D O I：
10.7567/APEX.11.033002
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A technique based on torque magnetometry is proposed for precise determination of the uniaxial magnetic anisotropy constant, K-u, of perpendicularly magnetized thin films, in particular for K-u larger than 10(6) J/m(3), by electrical detection of the anomalous Hall effect and exact determination of the magnetic field direction. This technique can measure the K-u value of several-nanometer-thick polycrystalline films. Further, the K-u value of FePt-C granular films, which are expected to be useful for high-density magnetic recording media, is evaluated. The intrinsic K-u value of 4-nm-thick FePt-C thin films fabricated at 450 degrees C is approximately 3 MJ/m(3) for carbon contents up to 34 vol% C. (C) 2018 The Japan Society of Applied Physics
引用
收藏
页数：3
相关论文
共 50 条
  • [41] Perpendicular magnetic anisotropy of Au/FePt thin films grown on Si substrates
    Lee, YW
    Cho, WS
    Kim, CO
    JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 1999, 35 : S472 - S474
  • [42] Modelling of strain induced magnetic anisotropy in Au additive FePt thin films
    Goyal, Rajan
    Lamba, S.
    Annapoorni, S.
    PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL, 2019, 29 (05) : 517 - 524
  • [43] Modelling of strain induced magnetic anisotropy in Au additive FePt thin films
    Rajan Goyal
    S.Lamba
    S.Annapoorni
    ProgressinNaturalScience:MaterialsInternational, 2019, 29 (05) : 517 - 524
  • [44] Effects of TiN intermediate layer on microstructure and magnetic anisotropy of FePt thin films
    Qiu, Zhaoguo
    Yu, Hongya
    Liu, Zhongwu
    Zeng, Dechang
    Liu, J. Ping
    APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2016, 122 (04):
  • [45] Magneto-Optical Ellipsometry of Thin Films with Optical Uniaxial Anisotropy
    Maximova, O. A.
    Lyaschenko, S. A.
    Varnakov, S. N.
    Ovchinnikov, S. G.
    Yakovlev, I. A.
    Shevtsov, D. V.
    Andryushchenko, T. A.
    PHYSICS OF METALS AND METALLOGRAPHY, 2023, 124 (14): : 1654 - 1661
  • [46] DOMAIN WALL COERCIVE FORCE OF THIN FERROMAGNETIC FILMS WITH UNIAXIAL ANISOTROPY
    RICHARDS, HD
    BRITISH JOURNAL OF APPLIED PHYSICS, 1966, 17 (07): : 879 - &
  • [47] Magneto-Optical Ellipsometry of Thin Films with Optical Uniaxial Anisotropy
    O. A. Maximova
    S. A. Lyaschenko
    S. N. Varnakov
    S. G. Ovchinnikov
    I. A. Yakovlev
    D. V. Shevtsov
    T. A. Andryushchenko
    Physics of Metals and Metallography, 2023, 124 : 1654 - 1661
  • [48] Ferromagnetic resonance and magnetoelastic demodulation in thin active films with an uniaxial anisotropy
    Klimov, A.
    Ignatov, Yu.
    Tiercelin, N.
    Preobrazhensky, V.
    Pernod, P.
    Nikitov, S.
    JOURNAL OF APPLIED PHYSICS, 2010, 107 (09)
  • [49] In-plane uniaxial anisotropy rotations in (Ga,Mn)As thin films
    Sawicki, M
    Wang, KY
    Edmonds, KW
    Campion, RP
    Staddon, CR
    Farley, NRS
    Foxon, CT
    Papis, E
    Kaminska, E
    Piotrowska, A
    Dietl, T
    Gallagher, BL
    PHYSICAL REVIEW B, 2005, 71 (12)
  • [50] In-plane uniaxial anisotropy rotations in (Ga, Mn)As thin films
    Sawicki, M.
    Wang, K. -Y.
    Edmonds, K. W.
    Campion, R. P.
    Staddon, C. R.
    Farley, N. R. S.
    Foxon, C. T.
    Dietl, T.
    Gallagher, B. L.
    MATERIALS SCIENCE-POLAND, 2006, 24 (03): : 627 - 631
12345