Pulsed laser deposition grown yttrium-iron-garnet thin films: Effect of composition and iron ion valences on microstructure and magnetic properties

被引：36

作者：

Jin, Lichuan ^{[1
]}

Jia, Kancheng ^{[1
]}

He, Yujie ^{[1
]}

Wang, Gang ^{[1
]}

Zhong, Zhiyong ^{[1
]}

Zhang, Huaiwu ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2019年 / 483卷

基金：

中国国家自然科学基金;

关键词：

Yttrium-iron-garnet films; Pulsed laser deposition; Annealing temperature; Chemical composition; Iron ion valences; ANNEALING TEMPERATURE;

D O I：

10.1016/j.apsusc.2019.04.050

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, high quality yttrium-iron-garnet (YIG) thin films were fabricated on a Ga3Gd5O12 substrate by pulsed laser deposition (PLD). The material composition, iron ion valences and magnetic properties of the YIG films were systematically investigated as a function of annealing temperature. X-ray diffraction and Raman spectroscopy measurements demonstrate optimal YIG film crystallinity when annealed at 800 degrees C. X-ray photoelectron spectroscopy confirms the Fe2+ ions were strongly suppressed in YIG thin film after annealed at 800 degrees C. In this case, 60 nm-thick YIG films exhibit excellent magnetic properties having bulk-like saturated magnetization (1755 Gs), a minimized ferromagnetic resonance linewidth (8.3 Oe) and a low Gilbert damping parameter of 5.76 x 10(-4). Our study prove that suitable annealing conditions play a critical role on garnet composition, iron ion valences and magnetic properties for PLD grown high quality YIG thin films, which have great potential in the fabrication of low dissipative spintronic devices.

引用

页码：947 / 952

页数：6

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