February 2013

Conference Paper

Effect of longitudinal degree of freedom of magnetic moment in body-centered-cubic iron

By:
Yin, Junqi ; Eisenbach, Markus ; Nicholson, Donald M; Rusanu, Aurelian
Journal Name:
Journal of Applied Physics
Volume:
113
Issue Number:
17
Publication Date:
February 28, 2013
Conference Name:
12th Joint MMM-Intermag Conference
Conference Location:
Chicago, Illinois, United States of America
View DOI Listing:
https://doi.org/10.1063/1.4794136

Abstract

First principle calculations are performed to study the longitudinal degree of freedom of the magnetic moment in BCC iron. A model of the Heisenberg type of exchange interaction is proposed, which couples the spin and lattice degrees of freedom. Monte Carlo simulations are then applied to study the effect of thermal displacements on the magnetic phase transition in BCC Iron. The reason for the surprising success of fixed lattice Heisenberg models is explained.