2007/01/08 by Marian Fecioru-Morariu, Marian Fecioru‐Morariu, Fecioru-Morariu, Marian +10
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic Properties and Applications #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci) #Theoretical and Computational Physics #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.cond-mat/0701155
13 pages, 4 figures
arxiv created 2007/01/08 · openalex publication_date 2007/01/08 · arxiv updated 2009/12/01 · openalex created_date 2022/10/04 · openalex updated_date 2026/07/28
The effect of nonmagnetic metal additives in metallic antiferromagnets (AFMs) on the exchange bias (EB) has been investigated from a structural, magnetic and Monte Carlo simulation point of view in bilayers of CoFe/IrMn:Cu. Dilution by Cu atoms throughout the volume of the AFM IrMn give rise to an enhanced EB field for temperatures between 5 K and 300 K. The thermoremanent magnetization of the AFM-only is also enhanced with dilution, shows qualitatively the same temperature dependence as EB field and is at the origin of the EB mechanism. Monte Carlo simulations based on a Heisenberg model and temperature dependent uncompensated AFM moments confirm well the experimental results.