Structural and magnetic properties of NiFe<sub>2</sub>O<sub>4</sub> thin films grown on isostructural lattice-matched substrates
نویسندگان
چکیده
Nickel ferrite (NiFe2O4) thin films are grown epitaxially on two different isostructural substrates, (100)-oriented MgGa2O4 and ZnGa2O4, using pulsed laser deposition. These spinel substrates have a lattice mismatch of 0.62% 0.04%, respectively, with NiFe2O4 crystal. While the exhibit significant strain resulting in tetragonal distortion crystal structure, ZnGa2O4 substrate essentially strain-free retain their cubic structure because near-perfect match. Magnetometry data suggest that film is principal factor determining anisotropy these films. This also confirmed by effective magnetization values obtained from ferromagnetic resonance (FMR) measurements. there only modest decrease Gilbert damping constant reduction, an enhancement spin voltage observed Seebeck effect (SSE) measurements for thickness ?200 nm.
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ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2021
ISSN: ['1520-8842', '0003-6951', '1077-3118']
DOI: https://doi.org/10.1063/5.0047865