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Negative Oblique‐Incidence Anisotropy in Magnetostriction‐Free Permalloy Films
Author(s) -
Metzdorf W.,
Wiehl H. E.
Publication year - 1966
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19660170133
Subject(s) - permalloy , materials science , anisotropy , magnetostriction , condensed matter physics , annealing (glass) , magnetic anisotropy , optics , magnetization , composite material , magnetic field , physics , quantum mechanics
A magnetic oblique‐incidence anisotropy, of the order of some Oersteds, exists parallel to the plane of incidence in magnetostriction‐free permalloy films evaporated at small and medium angles of incidence. This is particularly evident in films which are evaporated onto hot substrates. This small negative oblique‐incidence anisotropy is explained by a slightly anisotropic roughness of the film surface, which is created by an oblique, columnar grain growth. This negative oblique‐incidence anisotropy can be used to compensate for the normal, positive, one at medium substrate temperatures, in order to get low easy‐axis skew. The anisotropy of permalloy films obliquely deposited at room temperature cannot be inverted by annealing at higher temperatures, whilst the negative oblique‐incidence anisotropy can be increased by annealing.