Structural and magnetic properties of electrospun yttrium iron garnet (YIG) nanofibers

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• 作者：Lining Pan^a ; Xinlei Zhang^a ; Jianbo Wang^a ; ^b ; Qingfang Liu^a ; ^{liuqf@lzu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Yttrium iron garnet (YIG) ; Electrospinning ; Magnetic properties ; Electron spin resonance
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：43
• 期：1
• 页码：1236-1241
• 全文大小：1516 K

文摘

The present work describes the fabrication of yttrium iron garnet (YIG) nanofibers prepared via electrospinning method. The YIG nanofibers with diameters of around 80 nm were formed when calcinations temperature exceeded 750 °C. The morphology and magnetic parameters including saturation magnetization (M_s) and coercivity (H_c) of these samples dramatically change with variation of the annealing temperature. In particular, the M_s displays a steady increase from 3.1 emu/g at 700–21.5 emu/g at 1000 °C, and the H_c shows a different tendency that first increases to a maximum value of 140 Oe at 750 °C, and then reduce distinctly. Finally, the electron spin resonance spectra display strong asymmetry and broad linewidth that are highly affected by shape anisotropy, defects and the presence of trace amount second phase orthorhombic YFeO₃ (o-YFeO₃) in the YIG nanofibers.