期刊
APPLIED PHYSICS LETTERS
卷 96, 期 25, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3456378
关键词
ab initio calculations; aluminium alloys; cobalt alloys; damping; electronic density of states; epitaxial growth; Fermi level; ferromagnetic materials; ferromagnetic resonance; iron alloys; manganese alloys; metallic epitaxial layers; silicon alloys; spin-orbit interactions
资金
- MEXT
- NEDO
The magnetic damping constant in a series of Co2MnAlxSi1-x and Co2FexMn1-xSi Heusler alloy epitaxial films were systematically investigated by using ferromagnetic resonance technique. The determined magnetic damping constant is roughly proportional to the density of states at the Fermi energy of the first principle calculation. The result is consistent with the theoretical prediction when taking spin-orbit interaction into account. The small Gilbert damping constant for the fabricated films other than the Co2FexMn1-xSi film with x>0.6 can be originated in the half-metallic electronic structure of Heusler alloys. (C) 2010 American Institute of Physics. [doi:10.1063/1.3456378]
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