Publication Date:
2014-08-22
Description:
The temperature dependence of the Gilbert damping and magnetic anisotropy are investigated in L 2 1 Co 2 FeAl films epitaxially grown on GaAs (001) substrate by the time resolved magneto-optical Kerr effect. We found that the in-plane biaxial anisotropy increases by more than 90% with the temperature decreasing from 300 K to 80 K, which is mainly due to the strong variation of the magneto-elastic coefficients. In contrast, the intrinsic Gilbert damping rises only about 10%, which is mainly attributed to the reduction of the electron phonon scattering rate, independent of the strain-induced spin-orbit coupling energy.
Print ISSN:
0003-6951
Electronic ISSN:
1077-3118
Topics:
Physics
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