Probing magnetic anisotropy effects in epitaxial CrO2 thin films

被引：53
作者：
Spinu, L [1 ]
Srikanth, H
Gupta, A
Li, XW
Xiao, G
机构：
[1] Univ New Orleans, Adv Mat Res Inst, New Orleans, LA 70148 USA
[2] IBM Corp, Thomas J Watson Res Ctr, Yorktown Heights, NY 10598 USA
[3] Brown Univ, Dept Phys, Providence, RI 02912 USA
[4] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China
来源：
PHYSICAL REVIEW B | 2000年 / 62卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.62.8931
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magnetic anisotropy in ferromagnetic chromium dioxide thin films (T-c similar to 393 K) grown epitaxially on (100) TiO2 substrates, is probed using precise rf transverse susceptibility (chi(T)) measurements. Singular peaks in chi(T) ale observed that are associated with the anisotropy (+/-H-K) and switching (+/-H-s,) fields in CrO2. Theoretical calculations of chi(T) based on a simple coherent rotation model display remarkable agreement with the experimental data, indicating that these thin films behave like single-domain magnetic particles. Magnetoelastic contributions to the total anisotropy energy are needed to describe the evolution of chi(T) peaks at lower temperatures.
引用
收藏
页码：8931 / 8934
页数：4
相关论文
共 22 条
  • [1] Aharoni A., 1957, B RES COUNC ISRAEL A, V6A, P215
  • [2] Electron spin and optical coherence in semiconductors
    Awschalom, DD
    Kikkawa, JM
    [J]. PHYSICS TODAY, 1999, 52 (06) : 33 - 38
  • [3] Tension and torsion magnetic sensors based on frequency harmonic content analysis of induced signal in perpendicular fields
    Caltun, O
    Spinu, L
    Stancu, A
    [J]. SENSORS AND ACTUATORS A-PHYSICAL, 1997, 59 (1-3) : 142 - 148
  • [4] TRANSVERSE SUSCEPTIBILITY OF A FINE PARTICLE SYSTEM
    CHANTRELL, RW
    HOARE, A
    MELVILLE, D
    LUTKESTETZKAMP, HJ
    METHFESSEL, S
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 1989, 25 (05) : 4216 - 4218
  • [5] Magnetoresistance of chromium dioxide powder compacts
    Coey, JMD
    Berkowitz, AE
    Balcells, L
    Putris, FF
    Barry, A
    [J]. PHYSICAL REVIEW LETTERS, 1998, 80 (17) : 3815 - 3818
  • [6] Spin-polarized transport and magnetoresistance in magnetic oxides
    Gupta, A
    Sun, JZ
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) : 24 - 43
  • [7] THE REVERSIBLE TRANSVERSE SUSCEPTIBILITY OF PARTICULATE RECORDING MEDIA
    HOARE, A
    CHANTRELL, RW
    SCHMITT, W
    EILING, A
    [J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1993, 26 (03) : 461 - 468
  • [8] Enhanced intergrain tunneling magnetoresistance in half-metallic CrO2 films
    Hwang, HY
    Cheong, SW
    [J]. SCIENCE, 1997, 278 (5343) : 1607 - 1609
  • [9] CRO2 - A NEW HALF-METALLIC FERROMAGNET
    KAMPER, KP
    SCHMITT, W
    GUNTHERODT, G
    GAMBINO, RJ
    RUF, R
    [J]. PHYSICAL REVIEW LETTERS, 1987, 59 (24) : 2788 - 2791
  • [10] Magnetoresistance and Hall effect of chromium dioxide epitaxial thin films
    Li, XW
    Gupta, A
    McGuire, TR
    Duncombe, PR
    Xiao, G
    [J]. JOURNAL OF APPLIED PHYSICS, 1999, 85 (08) : 5585 - 5587
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