Enhancement of Magnetism of Fe by Cr and V

Masako Ogura, Hisazumi Akai, Junjiro Kanamori
2011 Journal of the Physical Society of Japan  
Enhancement of magnetism of Fe that occurs by alloying with Cr or V is discussed on the basis of first-principles electronic structure calculation. The d states of Fe next to Cr(V) are pushed down to the lower energy side compared to those of pure Fe due to the hybridization with Cr(V) d states, which leads a Co-like electronic structure for the Fe atom. This enhances magnetic moments of other Fe atoms and also the exchange couplings among them. The same mechanism works as well for the
more » ... of Fe/Cr heterostructures. The idea is extended to design of a new type of antiferromagnets with high N\'eel temperature. Such heterostructures could be used to increase a magnetic anisotropy of permanent magnets.
doi:10.1143/jpsj.80.104711 fatcat:4smgo5k62nhhvhe2hmmqv55xwe