Tetragonal distortion induced perpendicular magnetic anisotropy in (Fe0.5Ni0.5)xRh1−x alloy thin films

•Epitaxial (Fe0.5Ni0.5)xRh1−x alloy thin film were grown on MgO(100) substrate.•The variation of chemical composition was allowed to control the lattice parameter of the crystal.•The tensile strain applied by the MgO substrate leads to enhance perpendicular magnetic anisotropy.•First-principles calc...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2021-11, Vol.538, p.1, Article 168256
Main Authors: Yilmaz, Nurcan, Deger, Caner, Parabas, Adem, Yildiz, Fikret
Format: Article
Language:English
Subjects:
Anisotropy
Composition
Crystal lattices
Crystal structure
Distortion
Fe-Ni-Rh alloys
Ferromagnetic materials
Ferromagnetic resonance
First principles
Intermetallic compounds
Lattice parameters
Magnetic anisotropy
Magnetic properties
Magnetism
Perpendicular magnetic anisotropy
Substrates
Thin films
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Summary:•Epitaxial (Fe0.5Ni0.5)xRh1−x alloy thin film were grown on MgO(100) substrate.•The variation of chemical composition was allowed to control the lattice parameter of the crystal.•The tensile strain applied by the MgO substrate leads to enhance perpendicular magnetic anisotropy.•First-principles calculations showed that the strain in the crystal can induce the PMA. We investigated the structural and magnetic properties of (Fe0.5Ni0.5)xRh1−x alloy thin films grown on MgO (100) substrate. The crystal lattice parameters of the alloy are tailored via the tetragonal distortion from the substrate by varying the composition. The change in the lattice parameters and compositions allowed us to control the magnetic properties as well. For thin films with a higher concentration of ferromagnetic content exhibit strong in-plane magnetic anisotropy. Perpendicular magnetic anisotropy (PMA) was observed around 40% of FeNi. We show that the main contribution to the PMA around 40% FeNi is originated from the tetragonal distortion in the crystal, via first-principles calculations.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2021.168256