Half-metallicity and Gilbert damping constant in Co2FexMn1−xSi Heusler alloys depending on the film composition
Half-metallicity and Gilbert damping constant in Co2FexMn1−xSi Heusler alloys depending on the film composition
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DOI：
10.1063/1.3105982
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发表时间：
2009-03
影响因子：
4
通讯作者：
T. Kubota;S. Tsunegi;M. Oogane;S. Mizukami;T. Miyazaki;H. Naganuma;Y. Ando
中科院分区：
文献类型：
--
作者：
T. Kubota;S. Tsunegi;M. Oogane;S. Mizukami;T. Miyazaki;H. Naganuma;Y. Ando
Transport 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.
