Magnetic effects of interstitial hydrogen in nickel
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- 作者：Andrea Leó ; na ; E.A. Velá ; squezb ; c ; d ; J. Mazo-Zuluagae ; J. Mejí ; a-Ló ; pezb ; c ; J.M. Floreza ; P. Vargasa ; c ; patricio.vargas@usm.cl" class="auth_mail" title="E-mail the corresponding author
- 关键词：NiHx ; Metal hydrides ; Stoner model ; Ferromagnetic nickel ; Interstitial hydrogen ; ab initio calculations
- 刊名：Journal of Magnetism and Magnetic Materials
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：421
- 期：Complete
- 页码：7-12
- 全文大小：2166 K
文摘
We calculate and explain the change of magnetic properties of Ni with different concentrations of H.
We propose a simple Stoner type of model to describe the influence of the H impurity on the magnetic properties of Ni.
The band exchange splitting reduction as the H concentration increases, is a consequence of the competition between the band energy term (kinetic energy) and the ferromagnetic energy term (Weiss field).