Dy-Cu-Sn三重合伊铁石榴石:用于微波设备的增强磁性和介电材料
Kexin Chen1, Ruyun Ding1, Jia Gu1
1Laboratory for Nanoelectronics and NanoDevices, Department of Electronics Science and Technology, Hangzhou Dianzi University, Hangzhou 310018, China.
ACS omega
|August 4, 2025
概括
这项研究合成了Dy-Sn-Cu三二铁石榴石 (YIG) 陶,优化了先进微波应用的磁性和介电性质. 兴奋剂增强了软磁性能和电阻.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 磁力学 磁力学 是一种
背景情况:
- 铁石榴石 (YIG) 是一种铁磁性氧化物,在微波和光电子设备中具有有价值的自旋波特性.
- YIG的应用源于其强大的法拉第旋转,低光学损失和高基里温度.
研究的目的:
- 为了合成Dy-Sn-Cu三化YIG陶,其组成为Y3-x Dy x Fe4.8 Cu0.1 Sn0.1 O12 (x = 0.05-0.20).
- 研究Dy3+兴奋剂度对YIG的微观结构,晶体结构,磁性和介电性质的影响.
- 为了实现这些属性的协同优化,以提高微波组件的性能.
主要方法:
- Dy-Sn-Cu三化YIG陶的固态反应合成.
- 微观结构,晶体结构,磁性特性 (和磁化,强迫性,透性,FMR线宽) 和介电性质 (介电常数,损失触点,电电阻) 的表征.
- 对Dy3+兴奋剂度的系统变化 (x = 0.05-0.20).
主要成果:
- 离子优先占据十二面体c位,导致晶格扩张,粒度增长和更密集的微观结构.
- 在x=0.15时获得的最佳软磁性:和磁化值为28.42emu/g,强制性为5.39Oe,实际透率为78.92在1MHz.
- 增强的超级交换相互作用和减少域壁固定有助于提高磁性性能.
- 增加的磁性异构性将铁磁共振 (FMR) 线宽从69到195 Oe扩大.
- 在 x = 0.20 时,观察到最佳介电性质:介电常数为 20.34,介电损耗为 0.13,电阻率为 3.34 × 10 9 Ω cm 在 305 K.
结论:
- Dy-Sn-Cu三化提供了一个协同路线,以优化YIG陶的磁性和介电性质.
- 该研究表明,使用量身定制的YIG成分开发高性能,紧,高效的集成微波元件的可行策略.
- 控制染色染为特定微波和光电子应用提供了微调YIG属性的途径.
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