Spin-state transition in antiferromagneticNi0.4Mn0.6films in Ni/NiMn/Ni trilayers on Cu(001)
| Autor: | T. Hagelschuer, Yasser A. Shokr, Wolfgang Kuch |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Spin states Transition temperature 02 engineering and technology Coercivity Spin structure 021001 nanoscience & nanotechnology Epitaxy Coupling (probability) 01 natural sciences Crystallography Ferromagnetism 0103 physical sciences Antiferromagnetism Condensed Matter::Strongly Correlated Electrons 010306 general physics 0210 nano-technology |
| Zdroj: | Physical Review B. 93 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.93.054428 |
| Popis: | The influence of the antiferromagnetic (AFM) spin structure of epitaxial ${\mathrm{Ni}}_{0.4}{\mathrm{Mn}}_{0.6}$ films on the magnetic properties of adjacent out-of-plane-magnetized ferromagnetic (FM) Ni layers in $\text{Ni}/{\mathrm{Ni}}_{0.4}{\mathrm{Mn}}_{0.6}/\text{Ni}$ trilayers on Cu(001) is investigated by magneto-optical Kerr-effect experiments. An AFM interlayer coupling between the two FM layers, which emerges below the AFM ordering temperature for an odd number of atomic layers of the antiferromagnet, suddenly disappears at a lower, AFM-thickness-dependent transition temperature. For even numbers of atomic layers of the antiferromagnet, a maximum of the coercivity is observed at a corresponding temperature. This result is interpreted as a transition of the AFM spin structure of the ${\mathrm{Ni}}_{0.4}{\mathrm{Mn}}_{0.6}$ layer that strongly affects the interlayer exchange coupling of the two FM layers by direct exchange through the AFM layer. |
| Databáze: | OpenAIRE |
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