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题名: Effects of spacer layers on magnetic properties and exchange couplings of Nd-Fe-B/Nd-Ce-Fe-B multilayer films
作者: Sun, Ya-Chao;  Zhu, Ming-Gang;  Liu, Wei;  Han, Rui;  Zhang, Wen-Chen;  Li, Yan-Feng;  Li, Wei
发表日期: 2017-10-1
摘要: The influences of the spacer-layer Ta on the structures and magnetic properties of NdFeB/NdCeFeB multilayer films are investigated via DC sputtering under an Ar pressure of 1.2 Pa. An obvious ( 00l) texture of the hard phase is observed in each of the films, which indicates that the main phase of the film does not significantly change with Ta spacer-layer thickness. As a result, both the remanence and the saturation magnetization of the magnet first increase and then decrease, and the maximum values of 4 pi M-r and H-cj are 10.4 kGs ( 1 Gs = 10(-4) T) and 15.0 kOe ( 1 Oe = 79.5775 A.m(-1)) for the film with a 2-nm-thick Ta spacer-layer, respectively, where the crystalline structures are columnar shape particles. The measured relationship between irreversible portion D(H) = Delta M-irr/2M(r) and H indicates that the nucleation field of the film decreases with spacer-layer thickness increasing, owing to slightly disordered grains near the interface between different magnetic layers.
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Recommended Citation:
Sun, Ya-Chao,Zhu, Ming-Gang,Liu, Wei,et al. Effects Of Spacer Layers On Magnetic Properties And Exchange Couplings Of Nd-fe-b/nd-ce-fe-b Multilayer Films[J]. Iop Publishing Ltd,2017,26(10):-.

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