Magnetic after-effect in amorphous Tb–Fe thin films

Keishi Ohashi, Hisao Tsuji, Shigeru Tsunashima, Susumu Uchiyama

研究成果査読

18 被引用数 (Scopus)

抄録

Magnetic after-effect in sputter deposited TbxFe1−x (x×0.17∼0.24) films is studied. The after-effect is directly observed using polar Kerr magneto-optic effect as a slow propagation of domain walls. The velocity of the domain growth (10−4∼10−1 cm/s) changes exponentially with the applied field. The viscosity coefficient Sv≡dM/d ln t·χ−1 (χ: irreversible susceptibility), which was used in describing Jordan type after-effect, is applied to characterize the after-effect. The value of Sv (22∼110 Oe) is inversely proportional to the saturation magnetization at room temperature and decreases with rising temperature. The origin of the slow wall motion is inferred to be the random anisotropy of Tb ion rather than the oxidation of the film surface.

本文言語English
ページ(範囲)1333-1338
ページ数6
ジャーナルJapanese journal of applied physics
19
7
DOI
出版ステータスPublished - 1980 7
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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