Growth and microwave properties of layered ferrogarnet structures

IF 0.9 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Physics and Chemistry of Solid State Pub Date : 2023-12-11 DOI:10.15330/pcss.24.4.656-661

S. Yushchuk, S.O. Yur`ev, V. Moklyak

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Abstract

The ferrogarnet structures consisting from one- to three- layers of monocrystalline yttrium-iron garnet Y3Fe5O12 (YIG) films, two- layered YIG - La,Ga:YIG and two- layered {Y,Sm,Lu}3(Fe,Ga)5O12 -YIG structures were grown by liquid-phase epitaxy (LPE) method on gadolinium - gallium garnet Gd3Ga5O12 (GGG) substrates of (111) orientation. The obtained layered ferrogarnet structures were studied by the methods of ferromagnetic resonance (FMR) and magnetostatic wave (MSW) interference. The two- and three- layered YIG structures have a wide FMR line width (∆H). For the three- layered YIG structures with the total thickness of 68-102 μm ∆H = 5,7- 11,5 Oe. The line width ∆H = 0,34 – 1,22 Oe correspond to the two- layered (Y,Sm,La)3(Fe,Ga)5O12 – YIG structures with thicknesses from 3 to 65 μm. Individual layers in all structures are characterized by similar or different saturation magnetizations (4πMs).The frequency MSW separation in the YIG - La,Ga:YIG layered structure was observed. It was shown that the propagation losses of MSW in one- and two- layered structures increase with decreasing wavelength of MSW and transition to a two- layered structure.

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层状铁榴石结构的生长和微波特性

通过液相外延（LPE）方法，在钆-镓石榴石 Gd3Ga5O12（GGG）（111）取向基底上生长了由一至三层单晶钇-铁石榴石 Y3Fe5O12（YIG）薄膜、两层 YIG - La,Ga:YIG 和两层 {Y,Sm,Lu}3(Fe,Ga)5O12 -YIG 结构组成的铁石榴石结构。研究人员采用铁磁共振（FMR）和磁静电波（MSW）干涉的方法对获得的层状铁榴石结构进行了研究。两层和三层 YIG 结构具有较宽的 FMR 线宽（∆H）。对于总厚度为 68-102 μm 的三层 YIG 结构，∆H = 5,7- 11,5 Oe。线宽 ∆H = 0,34 - 1,22 Oe 与厚度为 3 至 65 μm 的两层 (Y,Sm,La)3(Fe,Ga)5O12 - YIG 结构相对应。在 YIG - La,Ga:YIG 层状结构中观察到了频率 MSW 分离现象。研究表明，单层和双层结构中 MSW 的传播损耗随着 MSW 波长的减小和向双层结构的过渡而增加。

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来源期刊

Physics and Chemistry of Solid State Multiple-

CiteScore

1.70

自引率

14.30%

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