The epitaxial iron-yttrium garnet films with homogeneous properties and narrow FMR line width

S.I. Yushchuk; S.A. Yur`ev; V.V. Moklyak

doi:10.15330/pcss.24.2.354-360

Authors

S.I. Yushchuk Lviv Polytechnic National University, Lviv, Ukraine
S.A. Yur`ev Lviv Polytechnic National University, Lviv, Ukraine
V.V. Moklyak G.V. Kurdyumov Institute for Metal Physics, N.A.S. of Ukraine,Kyiv, Ukraine; Ivano-Frankivsk national technical university of oil and gas, Ivano-Frankivsk, Ukraine

DOI:

https://doi.org/10.15330/pcss.24.2.354-360

Keywords:

iron-yttrium garnet, ferrite-garnet films, liquid phase epitaxy, ferromagnetic resonance

Abstract

The growth of iron-yttrium garnet Y₃Fe₅O₁₂ (YIG) films with of 1...15 μm thicknesses on single-crystal substrates of gallium-gadolinium garnet Gd₃Ga₅O₁₂ (GGG) was carried out using the method of liquid phase epitaxy (LPE). The influence of the composition and mass of the charge, the temperature regimes, the rates of movement and the substrate rotation on the films parameters were studied. The layered structure caused by the heterogeneity of the chemical composition in the film thickness was determined and studied The dependence of the degree impurity of Pb²⁺ and Pt⁴⁺ ions in YIG films and their influence on the ferromagnetic resonance (FMR) line width ∆H on the films growth conditions was investigated. It’s shown that in order to obtain by the LPE method the series of defect-free films with low magnetic losses and reproducible parameters, it’s necessary to use melt-solutions of large mass (6...12 kg) and apply their additional mixing during the growth process.

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