Temperature Dependence of Magnetization Damping in Heusler Alloy Films |
| J. Dubowik, M. Załęski, H. Głowiński
Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland |
| and I. Gościańska
Department of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland |
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| The Gilbert damping for Co2CrAl (Co2Cr0.3Fe0.7Al) and Ni2MnSn Heusler alloy films was investigated as a function of temperature. The best films reveals the Gilbert damping nearly independent of temperature. Magnetic relaxation in Co2CrAl is strongly influenced by magnetic inhomogeneities due to phase separation. The best Ni2MnSn epitaxial films have comparable Gilbert damping α of 6× 10-3 as half-metallic Co2Cr0.3Fe0.7Al films with α = 3 × 10-3. |
| DOI: 10.12693/APhysPolA.118.848 PACS numbers: 76.50.+g, 75.70.Ak, 75.78.Jp |