FMR investigations of exchange biased NiFe/IrMn/NiFe trilayers with high and low Ni relative content
| Autor: | Valeria Rodionova, Christina Gritsenko, I. O. Dzhun, Georgy V. Babaytsev, N.G. Chechenin |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Permalloy Materials science Condensed matter physics 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Magnetization Exchange bias Ferromagnetism 0103 physical sciences Antiferromagnetism Thin film 0210 nano-technology Anisotropy Layer (electronics) |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 470:151-155 |
| ISSN: | 0304-8853 |
| Popis: | Magnetic properties of trilayer double-exchange biased Si/Ta(30 nm)/NixFe(1−x)(10 nm)/IrMn(tAF)/NixFe(1−x(10 нм)/Ta(30 нм) thin film structures with x = 0.4 and x = 0.75 were investigated. The exchange bias, noncollinearity of unidirectional and uniaxial anisotropy and magnetization in both bottom and top ferromagnetic layers as a function of the antiferromagnetic (AF) layer thickness in the range from 2 to 50 nm were investigated. The obtained effects support the model of ferromagnetic coupling through the antiferromagnetic spacer and the model of rotatable anisotropy contribution at small AF thickness. It was found that usage of low-nickel permalloy in exchange biased systems has advantages of higher magnetization, a higher magnetic ordering at the interface and smaller critical thickness of antiferromagnetic layer to set the exchange bias, though provides a lower exchange bias compared with normal permalloy composition. |
| Databáze: | OpenAIRE |
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