Analysis of magnetic anisotropy for thin films epitaxially grown on GaAs

Autor: Toshifumi Yano, Ken-ichi Matsuda, Tetsuya Uemura, Masafumi Yamamoto
Rok vydání: 2007
Předmět:
Zdroj: Journal of Magnetism and Magnetic Materials. 310:e696-e698
ISSN: 0304-8853
DOI: 10.1016/j.jmmm.2006.10.990
Popis: The structural and magnetic properties of Co 2 Cr 0.6 Fe 0.4 Al (CCFA) thin films epitaxially grown on GaAs substrates by sputtering were investigated. The CCFA film directly grown on GaAs showed a cube-on-cube crystallographic relation, while it was rotated by 45 ∘ in the (0 0 1) plane when a thin MgO layer was inserted between the CCFA and GaAs. Both samples showed strong magnetic anisotropy, in which a uniaxial anisotropy with an easy axis of [ 1 1 0 ] GaAs or [ 1 – 10 ] GaAs dominated with a slight cubic anisotropy having easy axes of 〈 1 1 0 〉 CCFA superimposed. The uniaxial anisotropy constants were approximately 1.6 times as large as the cubic anisotropy constants for both samples.
Databáze: OpenAIRE