Enhanced magnetic anisotropy energy density for superparamagnetic particles of cobalt

被引：30
|
作者：
Hickey, BJ [1 ]
Howson, MA [1 ]
Greig, D [1 ]
Wiser, N [1 ]
机构：
[1] BAR ILAN UNIV,DEPT PHYS,RAMAT GAN,ISRAEL
来源：
PHYSICAL REVIEW B | 1996年 / 53卷 / 01期
关键词：
D O I：
10.1103/PhysRevB.53.32
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We use our measurements of the magnetization and the magnetoresistance for very small superparamagnetic particles of Co to obtain the low-temperature value of the magnetic anisotropy energy density, C approximate to 3x10(8) erg/cm(3). This is nearly two orders of magnitude larger than the corresponding value for C for bulk Co. The enormous enhancement of C for very small particles of Co is consistent with results previously reported for very small particles of Fe and of FeNi.
引用
收藏
页码：32 / 33
页数：2
相关论文
共 50 条
  • [41] Nonlinear response of superparamagnetic particles with cubic anisotropy to a sudden change in the applied strong static magnetic field
    Yu. P. Kalmykov
    S. V. Titov
    Physics of the Solid State, 2002, 44 : 2276 - 2280
  • [42] Giant magnetic anisotropy at the nanoscale:: Overcoming the superparamagnetic limit
    Hernando, A.
    Crespo, P.
    Garcia, M. A.
    Pinel, E. Fernandez
    de la Venta, J.
    Fernandez, A.
    Penades, S.
    PHYSICAL REVIEW B, 2006, 74 (05)
  • [43] Energy barrier enhanced by higher order magnetic anisotropy terms
    Kitakami, O
    Okamoto, S
    Kikuchi, N
    Shimada, Y
    JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2003, 42 (5A): : L455 - L457
  • [44] AN INVESTIGATION OF ANISOTROPY OF COBALT-SURFACE-MODIFIED IRON-OXIDE MAGNETIC PARTICLES
    ZHANG, SG
    GAO, ZS
    JIANG, ST
    WU, LX
    IEEE TRANSACTIONS ON MAGNETICS, 1990, 26 (03) : 1149 - 1152
  • [45] A STUDY ON THE INDUCED MAGNETIC-ANISOTROPY IN COBALT-SUBSTITUTED ACICULAR MAGNETITE PARTICLES
    LUO, HL
    WANG, GH
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1994, 129 (2-3) : 389 - 392
  • [46] A STUDY OF THE INDUCED MAGNETIC-ANISOTROPY MECHANISM IN ACICULAR COBALT-FERRITE PARTICLES
    LUO, HL
    WANG, GH
    JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1994, 27 (05) : 892 - 896
  • [47] Enhanced Magnetic Anisotropy for Reprogrammable High-Force-Density Microactuators
    Chen, Yulan
    Srinivasan, Karthik
    Choates, Marcus
    Cestarollo, Ludovico
    El-Ghazaly, Amal
    ADVANCED FUNCTIONAL MATERIALS, 2024, 34 (02)
  • [48] On the motion of superparamagnetic particles in magnetic drug targeting
    Pengtao Yue
    Shernita Lee
    Shahriar Afkhami
    Yuriko Renardy
    Acta Mechanica, 2012, 223 : 505 - 527
  • [49] Magnetic resonance relaxation properties of superparamagnetic particles
    Gossuin, Yves
    Gillis, Pierre
    Hocq, Aline
    Vuong, Quoc L.
    Roch, Alain
    WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY, 2009, 1 (03) : 299 - 310
  • [50] On the motion of superparamagnetic particles in magnetic drug targeting
    Yue, Pengtao
    Lee, Shernita
    Afkhami, Shahriar
    Renardy, Yuriko
    ACTA MECHANICA, 2012, 223 (03) : 505 - 527
12345