2009/09/24 by Nian Ji, Xiaoqi Liu, Ji, Nian +4
Chemistry · Materials Science · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #FOS: Physical sciences #Magnetic Properties of Alloys #Materials Science (cond-mat.mtrl-sci) #Rare-earth and actinide compounds #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.0909.4480
11 pages, 4 figures
arxiv created 2009/09/24 · openalex publication_date 2009/09/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A new model is proposed for the strong ferromagnetism associated with partially localized orbitals in the Fe16N2 metallic system which draws substantially from models of heavy fermion metals. The basic idea is that the spatially isolated Fe-N clusters generate non-uniform charge density and increase the d-d electron interaction significantly, leading to a highly spin polarized configuration for low lying 3d orbitals. Simulation based on LDA+U method is performed to illustrate the correlation between enhanced U and giant magnetic moment.