• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Functional Materials >Interfacial and Bulk Magnetic Properties of Stoichiometric Cerium Doped Terbium Iron Garnet Polycrystalline Thin Films
【24h】

Interfacial and Bulk Magnetic Properties of Stoichiometric Cerium Doped Terbium Iron Garnet Polycrystalline Thin Films

机译：化学计量掺铈Ter铁石榴石多晶薄膜的界面和体磁性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

One of the best magneto-optical claddings for optical isolators in photonic integrated circuits is sputter deposited cerium-doped terbium iron garnet (Ce:TbIG) which has a large Faraday rotation (approximate to-3500 degrees cm(-1) at 1550 nm). Near-ideal stoichiometry Ce + TbFe = 0.57 of Ce0.5Tb2.5Fe4.75O12 is found to have a 44 nm magnetic dead layer that can impede the interaction of propagating modes with garnet claddings. The effective anisotropy of Ce:TbIG on Si is also important, but calculations using bulk thermal mismatch overestimate the effective anisotropy. Here, X-ray diffraction measurements yield highly accurate measurements of strain that show anisotropy favors an in-plane magnetization in agreement with the positive magnetostriction of Ce:TbIG. Upon doping TbIG with Ce, a slight decrease in compensation temperature occurs which points to preferential rare-earth occupation in dodecahedral sites and an absence of cation redistribution between different lattice sites. The high Faraday rotation, large remanent ratio, large coercivity, and preferential in-plane magnetization enable Ce:TbIG to be an in-plane latched garnet, immune to stray fields with magnetization collinear to direction of light propagation.
机译：光子集成电路中用于光学隔离器的最佳磁光覆层之一是溅射沉积的铈掺杂ter铁石榴石（Ce：TbIG），其法拉第旋转较大（在1550 nm处约为-3500度cm（-1）） 。发现Ce0.5Tb2.5Fe4.75O12的近乎理想的化学计量Ce + TbFe = 0.57具有44 nm的磁性死层，可以阻止传播模式与石榴石覆层的相互作用。 Ce：TbIG在Si上的有效各向异性也很重要，但是使用体热失配进行的计算高估了有效各向异性。在此，X射线衍射测量可产生高度精确的应变测量结果，显示各向异性有助于与Ce：TbIG的正磁致伸缩相一致的面内磁化。用Ce掺杂TbIG后，补偿温度会略有下降，这表明在十二面体位点优先占据稀土元素，并且在不同晶格位点之间没有阳离子重新分布。高的法拉第旋转，大的剩磁比，大的矫顽力以及优先的面内磁化强度使Ce：TbIG成为面内锁存的石榴石，不受杂散磁场的影响，磁化强度与光传播方向共线。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号