Component manipulated magnetic anisotropy and damping in Heusler-like compound Co2+x Fe1-x Al

Zhendong Chen; Xuezhong Ruan; Bo Liu; Long Yang; Jing Wu; Cunxu Gao; Hao Meng; Liang He; Rong Zhang; Yongbing Xu

doi:10.1088/1361-648X/aaf682

Component manipulated magnetic anisotropy and damping in Heusler-like compound Co_2+x Fe_1-x Al

J Phys Condens Matter. 2019 Feb 20;31(7):075802. doi: 10.1088/1361-648X/aaf682. Epub 2018 Dec 5.

Authors

Zhendong Chen¹, Xuezhong Ruan, Bo Liu, Long Yang, Jing Wu, Cunxu Gao, Hao Meng, Liang He, Rong Zhang, Yongbing Xu

Affiliation

¹ Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, Collaborative Innovation Center of Advanced Microstructures, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, People's Republic of China.

PMID: 30523874
DOI: 10.1088/1361-648X/aaf682

Abstract

The component dependence of the magnetocrystalline anisotropy and the damping has been investigated in epitaxial Heusler-like compound Co_2+x Fe_1-x Al films grown by molecular beam epitaxy (MBE) with x = -0.4, -0.2, 0, 0.2, and 0.4. All the films show a component tunable four-fold magnetocrystalline anisotropy with the easy axis along [1 1 0] orientation. The time resolved magneto-optic Kerr effect measurements reveal that the damping constant can be tuned in a range of 0.0065-0.0156 with a minimum value of 0.0065 at x = -0.2. This work provides a new approach to manipulate the magnetic dynamic properties of Heusler alloy Co₂FeAl by adjusting the proportion of Co and Fe.