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- W3039792451 abstract "Abstract Here we first report results of the start of the solid-state reaction at the Rh/Fe(001) interface and the structural and magnetic phase transformations in 52Rh/48Fe(001), 45Rh/55Fe(001), 68Rh/32Fe(001) bilayers from room temperature to 800 °C. For all bilayers the non-magnetic nanocrystalline phase with a B2 structure (nfm-B2) is the first phase that is formed on the Rh/Fe(001) interface near 100 °C. Above 300 °C, without changing the nanocrystalline B2 structure, the phase grows into the low-magnetization modification α l ʹ (M S l ~ 825 emu/cm 3 ) of the ferromagnetic α ʹ phase which has a reversible α l ʹ ↔ αʺ transition. After annealing 52Rh/48Fe(001) bilayers above 600 °C the α l ʹ phase increases in grain size and either develops into α h ʹ with high magnetization (M S h ~ 1,220 emu/cm 3 ) or remains in the α l ʹ phase. In contrast to α l ʹ, the α h ʹ ↔ αʺ transition in the α h ʹ films is completely suppressed. When the annealing temperature of the 45Rh/55Fe(001) samples is increased from 450 to 800 °C the low-magnetization nanocrystalline α l ʹ films develop into high crystalline perfection epitaxial α h ʹ(001) layers, which have a high magnetization of ~ 1,275 emu/cm 3 . α h ʹ(001) films do not undergo a transition to an antiferromagnetic αʺ phase. In 68Rh/32Fe(001) samples above 500 °C non-magnetic epitaxial γ(001) layers grow on the Fe(001) interface as a result of the solid-state reaction between the epitaxial α l ʹ(001) and polycrystalline Rh films. Our results demonstrate not only the complex nature of chemical interactions at the low-temperature synthesis of the nfm-B2 and α l ʹ phases in Rh/Fe(001) bilayers, but also establish their continuous link with chemical mechanisms underlying reversible α l ʹ ↔ αʺ transitions." @default.
- W3039792451 created "2020-07-10" @default.
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- W3039792451 date "2020-07-02" @default.
- W3039792451 modified "2023-10-16" @default.
- W3039792451 title "Solid-state synthesis, magnetic and structural properties of interfacial B2-FeRh(001) layers in Rh/Fe(001) films" @default.
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- W3039792451 doi "https://doi.org/10.1038/s41598-020-67837-2" @default.
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