Unidirectional Anisotropy in Permalloy Films at 4.2°K
作者:
Sheila B. Bailey,
Tatjana M. Peterlin,
Roy T. Richard,
E. N. Mitchell,
期刊:
Journal of Applied Physics
(AIP Available online 1970)
卷期:
Volume 41,
issue 1
页码: 194-196
ISSN:0021-8979
年代: 1970
DOI:10.1063/1.1658320
出版商: AIP
数据来源: AIP
摘要:
Studies of the temperature dependence of the unidirectional anisotropy of permalloy films as a function of the oxidation of the surface are reported and correlated with electron diffration studies of the surface oxides. Hematite (&agr;‐Fe2O3) is found to correlate with the existence of the anisotropy in films oxidized at 120°C in which the transition temperature is near 40°K. A specimen oxidized at 250°C showed a higher and broader transition though no &agr;‐Fe2O3could be correlated with the existence of the unidirectional anisotropy.
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