CUBIC MAGNETIC-ANISOTROPY OF NONSTOICHIOMETRIC MAGNETITE

被引:45
作者
ARAGON, R
机构
来源
PHYSICAL REVIEW B | 1992年 / 46卷 / 09期
关键词
D O I
10.1103/PhysRevB.46.5334
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The cubic magnetic anisotropy constants of Fe3(1-delta)O4 single crystals (with 0.000 < delta < 0.006), obtained by curve fitting of the respective magnetization curves, are reported between room temperature and the isotropic point (approximately 130 K), where the easy axis changes from [111] to [100] . Two distinct temperature dependences are observed for nonstoichiometries above and below delta(C) = 0.0039, in samples with second- and first-order Verwey transitions, respectively. The characteristic temperatures for the first-derivative curves are consistent with mean-field parameters for nearest-neighbor-interaction models.
引用
收藏
页码:5334 / 5338
页数:5
相关论文
共 30 条
  • [1] MAGNETOCRYSTALLINE ANISOTROPY OF LOW-TEMPERATURE PHASE OF MAGNETITE
    ABE, K
    MIYAMOTO, Y
    CHIKAZUMI, S
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1976, 41 (06) : 1894 - 1902
  • [2] INFLUENCE OF NONSTOICHIOMETRY ON THE VERWEY TRANSITION
    ARAGON, R
    BUTTREY, DJ
    SHEPHERD, JP
    HONIG, JM
    [J]. PHYSICAL REVIEW B, 1985, 31 (01): : 430 - 436
  • [3] MAGNETIZATION AND EXCHANGE IN NONSTOICHIOMETRIC MAGNETITE
    ARAGON, R
    [J]. PHYSICAL REVIEW B, 1992, 46 (09): : 5328 - 5333
  • [4] MEAN-FIELD MODEL OF THE VERWEY TRANSITION IN MAGNETITE
    ARAGON, R
    HONIG, JM
    [J]. PHYSICAL REVIEW B, 1988, 37 (01): : 209 - 218
  • [5] Babkin E. V., 1984, Soviet Physics - Solid State, V26, P905
  • [6] FERROMAGNETIC RESONANCE ABSORPTION IN MAGNETITE SINGLE CRYSTALS
    BICKFORD, LR
    [J]. PHYSICAL REVIEW, 1950, 78 (04): : 449 - 457
  • [7] Brailsford F, 1966, PHYS PRINCIPLES MAGN, P121
  • [8] MAGNETIC AND ELECTRIC PROPERTIES OF MAGNETITE AT LOW TEMPERATURES
    CALHOUN, BA
    [J]. PHYSICAL REVIEW, 1954, 94 (06): : 1577 - 1585
  • [9] DIFFUSE ELECTRON-SCATTERING FROM MAGNETITE ABOVE VERWEY TRANSITION-TEMPERATURE
    CHIBA, K
    SUZUKI, K
    CHIKAZUMI, S
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1975, 39 (03) : 839 - 840
  • [10] Chikazumi S., 1976, AIP P, V29, P382