MFM study of magnetic vortex cores in circular permalloy dots: behavior in external field

被引：155
|
作者：
Okuno, T [1 ]
Shigeto, K
Ono, T
Mibu, K
Shinjo, T
机构：
[1] Kyoto Univ, Inst Chem Res, Uji 6110011, Japan
[2] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 240卷 / 1-3期
基金：
日本学术振兴会;
关键词：
permalloy circular dot; magnetization vortex structure; MFM; switching fields; magnetization reversal;
D O I：
10.1016/S0304-8853(01)00708-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In a circular dot of permalloy with an appropriate size, a vortex structure with perpendicular (turned-up) magnetization at the core is realized. The existence of the perpendicular magnetization spot has been confirmed and the direction of the magnetization, up or down, has been determined by magnetic force microscopy (MFM) for permalloy dots with the diameter of 0.1-1 mum. The switching field of turned-up magnetization is determined by applying external fields perpendicularly and in tilted directions to the plane. By comparing the MFM results and the magnetization curves measured by a SQUID magnetometer, the switching process of turned-up magnetization is argued. (C)2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：1 / 6
页数：6
相关论文
共 50 条
  • [1] Micromagnetic simulation of magnetic vortex cores in circular permalloy disks: Switching behavior in external magnetic field
    Pang, Zhiyong
    Yin, Fei
    Fang, Shaojie
    Zheng, Wenfeng
    Han, Shenghao
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2012, 324 (05) : 884 - 888
  • [2] Two types of magnetic vortex cores in elliptical permalloy dots
    Okuno, T
    Mibu, K
    Shinjo, T
    [J]. JOURNAL OF APPLIED PHYSICS, 2004, 95 (07) : 3612 - 3617
  • [3] Magnetic vortex core observation in circular dots of permalloy
    Shinjo, T
    Okuno, T
    Hassdorf, R
    Shigeto, K
    Ono, T
    [J]. SCIENCE, 2000, 289 (5481) : 930 - 932
  • [4] MFM imaging of patterned permalloy elements under an external applied field
    García, JM
    Thiaville, A
    Miltat, J
    Kirk, KJ
    Chapman, JN
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 242 : 1267 - 1269
  • [5] Magnetic properties of submicron circular permalloy dots
    Gubbiotti, G
    Carlotti, G
    Nizzoli, F
    Zivieri, R
    Okuno, T
    Shinjo, T
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (05) : 2532 - 2534
  • [6] Motion and Switching of Dual-Vortex Cores in Elliptical Permalloy Nanodisk Stimulated by a Gaussian Magnetic Field Pulse
    Li, X.
    Zhou, Y.
    Zeng, T.
    Lin, K. -W.
    Lai, P. T.
    Pong, Philip W. T.
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 2017, 53 (05)
  • [7] Switching Behavior of Vortex Cores in Bilayer Nanodots by Uniform Magnetic Field Pulses
    Yang, Jyh-Shinn
    Lee, Ching-Ming
    Chang, Ching-Ray
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 2011, 47 (03) : 641 - 644
  • [8] MFM STUDY OF DOMAIN STRUCTURE IN ULTRATHIN Co FILMS UNDER EXTERNAL MAGNETIC FIELD
    Sveklo, I.
    Kisielewski, M.
    Maziewski, A.
    Baczewski, L. T.
    Wawro, A.
    [J]. PHYSICS, CHEMISTRY AND APPLICATION OF NANOSTRUCTURES: REVIEWS AND SHORT NOTES, 2007, : 74 - +
  • [9] Spin excitation frequencies in magnetostatically coupled arrays of vortex state circular Permalloy dots
    Awad, A. A.
    Aranda, G. R.
    Dieleman, D.
    Guslienko, K. Y.
    Kakazei, G. N.
    Ivanov, B. A.
    Aliev, F. G.
    [J]. APPLIED PHYSICS LETTERS, 2010, 97 (13)
  • [10] Probing dynamical magnetization pinning in circular dots as a function of the external magnetic field orientation
    Kakazei, G. N.
    Aranda, G. R.
    Bunyaev, S. A.
    Golub, V. O.
    Tartakovskaya, E. V.
    Chumak, A. V.
    Serga, A. A.
    Hillebrands, B.
    Guslienko, K. Y.
    [J]. PHYSICAL REVIEW B, 2012, 86 (05):
12345