1. Nd-Fe-B films with perpendicular magnetic anisotropy and extremely large room temperature coercivity.
- Author
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Ma, Chuang, Xia, Jing, Zhang, Xichao, Zhou, Yan, Morisako, Akimitsu, Piramanayagam, S.N., and Liu, Xiaoxi
- Subjects
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COLD fusion , *MAGNETIC anisotropy , *COERCIVE fields (Electronics) , *AMORPHOUS substances , *RAPID thermal processing - Abstract
Highlights • Prepared Nd-Fe-B films with perpendicular magnetic anisotropy at lower temperature. • Improved magnetic anisotropy and c-axis orientation by Tb additions. • Demonstrated correlations between as-deposited amorphous crystallized films. • Revealed the origination of crystallographic properties of annealed Nd-Fe-B films. Abstract Nd-Fe-B films with perpendicular magnetic anisotropy are important for various applications. Most common process to prepare Nd-Fe-B thin films with perpendicular magnetic anisotropy is the heteroepitaxy process. Here, Nd-Fe-B thin films with perpendicular magnetic anisotropy were prepared by a two-step process. Amorphous and magnetically soft thin films were first deposited. Crystallized, magnetic hard thin films were obtained by rapid thermal annealing of the as-deposited films. A clear correlation between perpendicular magnetic anisotropy of annealed state and the domain configuration in the as-deposited state was noticed. Films prepared without substrate heating, with additions of Tb show perpendicular coercivity which is larger than 24 kOe. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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