MAGNETIC AFTER-EFFECT IN AMORPHOUS Tb-Fe THIN FILMS.

Keishi Ohashi, Hisao Tsuji, Shigeru Tsunashima, Susumu Uchiyama

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Abstract

Magnetic after-effect in sputter deposited Tb//xFe//1// minus //x (x multiplied by 0. 17 approximately equals 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 changes exponentially with the applied field. The viscosity coefficient which was used in describing Jordan type after-effect, is applied to characterize the after-effect. The value of S//v 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.

Original languageEnglish
Pages (from-to)1333-1338
Number of pages6
JournalJapanese Journal of Applied Physics
Volume19
Issue number7
Publication statusPublished - 1980 Jul
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Ohashi, K., Tsuji, H., Tsunashima, S., & Uchiyama, S. (1980). MAGNETIC AFTER-EFFECT IN AMORPHOUS Tb-Fe THIN FILMS. Japanese Journal of Applied Physics, 19(7), 1333-1338.