Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8152769 | Journal of Magnetism and Magnetic Materials | 2018 | 10 Pages |
Abstract
In this paper, a serious of CoFeB films of 30â¯nm prepared by a DC magnetron sputtering on Si substrates with different roughness etched by NaOH solution are investigated. It is found that the coercivity (Hc) and effective damping coefficient α are influenced by the substrate roughness of the films. As the substrate roughness increased to 73.9â¯nm, the Hc ranged from 14.4â¯Oe to 81.4â¯Oe; the α, from 0.012 to 0.11 at the same time. It is attributed to the function of magnetic moment pinning and magnon-magnon scattering caused by the rough substrate. Thus, the tunable performances of soft magnetism and high frequency of CoFeB films make them become potential candidates for microwave-based devices and other tunable microwave devices.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Hongkang Xie, Lining Pan, Xiaohong Cheng, Zengtai Zhu, Hongmei Feng, Jianbo Wang, Qingfang Liu,