Half-metallicity and Gilbert damping constant in Co2FexMn1−xSi Heusler alloys depending on the film composition
2009; American Institute of Physics; Volume: 94; Issue: 12 Linguagem: Inglês
10.1063/1.3105982
ISSN1520-8842
AutoresTakahide Kubota, Sumito Tsunegi, Mikihiko Oogane, Shigemi Mizukami, T. Miyazaki, Hiroshi Naganuma, Yasuo Ando,
Tópico(s)MXene and MAX Phase Materials
ResumoTransport properties in magnetic tunnel junctions (MTJs) with Co2FexMn1−xSi (CFMS, x=0–1.0)/Al–O/Co75Fe25 structure and Gilbert damping constant in the epitaxial CFMS films were investigated. The tunnel magnetoresistance ratio is as high as 75% in MTJs with x=0.6 at room temperature. The Gilbert damping constant is minimal at x=0.4. Relations between half-metallicity and the Gilbert damping constant in CFMS films were examined, revealing that the damping constant is small in half-metallic CFMS films.
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