Cobalt substituted L1^sub 0^-MnAl thin films with large perpendicular magnetic anisotropy

The Co composition dependences of the structural and magnetic properties of L10-(MnAl)1− x Co x alloy films were investigated. The lattice constants of (MnAl)1− x Co x films gradually changed with increasing Co content while maintaining the L10-ordered structure below x = 0.08. The saturation magnet...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 56; no. 8; p. 0802B1
Main Authors Watanabe, Kenta, Oogane, Mikihiko, Ando, Yasuo
Format Journal Article
LanguageEnglish
Published Tokyo Japanese Journal of Applied Physics 01.08.2017
Subjects
Anisotropy
L1-0 structure (crystals)
Lattice parameters
Magnetic anisotropy
Magnetic properties
Magnetic saturation
Substitutes
Substrates
Surface roughness
Thin films
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Summary:The Co composition dependences of the structural and magnetic properties of L10-(MnAl)1− x Co x alloy films were investigated. The lattice constants of (MnAl)1− x Co x films gradually changed with increasing Co content while maintaining the L10-ordered structure below x = 0.08. The saturation magnetization gradually decreased with increasing Co content, and perpendicular magnetic anisotropy was observed below x = 0.08. In addition, Co substitution markedly improved the surface roughness of the films by decreasing the substrate temperature of (MnAl)1− x Co x films. We found that both a high magnetic anisotropy and a small surface roughness can be obtained by the substitution of Co atoms into MnAl films.
ISSN:0021-4922
1347-4065