Exchange bias through a Cu interlayer in an IrMn/Co system
![Thumbnail](/bitstream/handle/10183/109091/000595337.pdf.jpg?sequence=3&isAllowed=y)
Visualizar/abrir
Data
2007Autor
Tipo
Assunto
Abstract
Ferromagnetic resonance FMR and magnetization MAG measurements were used to study the exchange interaction between the antiferromagnetic and ferromagnetic layers in an IrMn/Cu/Co system as a function of the Cu spacer thickness. Although the experimental angular variations of the exchange-bias fields Heb FMR and Heb MAG coincide, the coupling strengths J and the Co layers’ anisotropy fields HU, obtained via numerical simulations, are different. For all Cu thicknesses JFMR >JMAG and HU FMR< HU MA ...
Ferromagnetic resonance FMR and magnetization MAG measurements were used to study the exchange interaction between the antiferromagnetic and ferromagnetic layers in an IrMn/Cu/Co system as a function of the Cu spacer thickness. Although the experimental angular variations of the exchange-bias fields Heb FMR and Heb MAG coincide, the coupling strengths J and the Co layers’ anisotropy fields HU, obtained via numerical simulations, are different. For all Cu thicknesses JFMR >JMAG and HU FMR< HU MAG. The exchange coupling decreases exponentially with the spacer thickness and is a short-range interaction. These characteristics were explained in the framework of a model considering polycrystalline magnetic layers with independent easy axis distributions, taking into account the rotatable anisotropy. The role of antiferromagnetic grains at the interface with different sizes and different magnetic stabilities is essential for understanding the behavior of this exchange-biased system. ...
Contido em
Physical review. B, Condensed matter and materials physics. Woodbury. Vol. 75, no. 21 (June 2007), 214402 5p.
Origem
Estrangeiro
Coleções
-
Artigos de Periódicos (39401)Ciências Exatas e da Terra (5976)
Este item está licenciado na Creative Commons License
![](/themes/Mirage2Novo//images/lume/cc.png)