Author:
Kota Yohei,Sakuma Akimasa
Abstract
Abstract
The effects of lattice distortion on magnetocrystalline anisotropy in α″-Fe16N2 was studied by first-principles calculations. We found that local distortion of the Fe lattice induced by interstitial N atoms is a key factor for realizing uniaxial magnetic anisotropy in α″-Fe16N2 systems. If the local distortion disappears, the uniaxial anisotropy constant K
u becomes nearly zero even though there is global distortion with an axial ratio c/a = 1.1. We also discuss one possibility that the random distribution of N atoms suppresses the local distortion effect and the uniaxial magnetic anisotropy in FeN for the α′ phase and martensite phase.
Funder
Japan Society for the Promotion of Science
Subject
General Physics and Astronomy,General Engineering
Cited by
1 articles.
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