The effect of annealing temperature on the parameters of single-crystal garnet ferrite films with uniaxial anisotropy

Abstract

Background. Monocrystalline garnet ferrite films have recently attracted special attention due to the presence of unique magnetoelectric properties number of these materials and the search for new alternative approaches to recording information. The great interBackground. Monocrystalline garnet ferrite films have recently attracted special attention due to the presence of unique magnetoelectric properties number of these materials and the search for new alternative approaches to recording information. The great interest in these materials is associated with their application prospects for logical operations on spin waves in various magnetoelectronics and spintronics elements. The purpose of this work is to study the high-temperature annealing effect on the garnet ferrite films magnetic parameters. Materials and methods. Monocrystalline garnet ferrite films samples were grown by liquid-phase epitaxy. High-temperature annealing was carried out in a muffle furnace. The films parameters were determined by the ferromagnetic resonance method on a radio spectrometer equipped with a temperature control prefix. Results. The hightemperature annealing effect on the characteristics of epitaxial garnet ferrite films with uniaxial magnetic anisotropy is investigated. The magnetization, anisotropy field, FMR line width and Curie temperature on the annealing temperature dependence are obtained. Conclusions. The most sensitive monocrystalline ferrite-garnet films parameters to hightemperature annealing are the growth magnetic anisotropy and the magnetic spin systemrelaxation parameters. The saturation magnetization, the exchange interaction parameter, as well as the gyromagnetic ratio remain unchanged.

Keywords

• garnet ferrite films
• ferromagnetic resonance
• high-temperature annealing
• magnetic anisotropy