...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of advanced dielectrics >RELAXOR FERROELECTRIC MATERIALS FOR MICROWAVE TUNABLE APPLICATIONS
【24h】

RELAXOR FERROELECTRIC MATERIALS FOR MICROWAVE TUNABLE APPLICATIONS

机译：微波可调谐应用的弛豫铁电材料

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

With strong dependences of dielectric constant on external applied electric fields, relaxor barium zirconium titanate (BaZr_xTi_(1-x)O_3 or BZT) and barium stannate titanate (BaSn_xTi_(1-x)O_3 or BTS), in both bulk ceramic and thin film forms, are increasingly being recognized as potential candidates of microwave tunable materials for device applications. This paper is aimed to review the recent progress in understanding the dielectric properties (such as tunability, dielectric loss and dielectric constant) of these relaxor materials. However, due to their relatively high dielectric constant and loss tangent, pure Ba(Zr,Ti)O_3 and Ba(Sn,Ti)O_3 do not fully satisfy the requirements of practical device applications. Therefore, various strategies have been developed to improve the dielectric properties of these two groups of relaxor materials. In this paper, we first discussed the dielectric tunability characteristics of pure Ba(Zr,Ti)O_3 and Ba(Sn,Ti)O_3 and then summarized the strategies that have been used, including (ⅰ) small amount acceptor or donor doping (such as rare-earth ions and transition metal ions) and (ⅱ) forming composites with low loss and low dielectric constant microwave dielectric materials (such as MgO, MgTiO_3 and so on). At the same time, the relationship between relaxor behavior and dielectric tunability was also discussed.
机译：介电常数对外部施加电场的依赖性强，块状陶瓷和薄膜中的弛豫钛酸锆钛酸钡（BaZr_xTi_（1-x）O_3或BZT）和锡酸钛酸钡（BaSn_xTi_（1-x）O_3或BTS）各种形式的微波被越来越多地认为是用于设备应用的微波可调材料的潜在候选产品。本文旨在回顾了解这些弛豫材料的介电性能（如可调性，介电损耗和介电常数）的最新进展。然而，由于它们相对较高的介电常数和损耗角正切，纯Ba（Zr，Ti）O_3和Ba（Sn，Ti）O_3不能完全满足实际设备应用的要求。因此，已经开发出各种策略来改善这两组松弛剂材料的介电性能。在本文中，我们首先讨论了纯Ba（Zr，Ti）O_3和Ba（Sn，Ti）O_3的介电可调谐性特征，然后总结了已使用的策略，包括（ⅰ）少量受体或施主掺杂（例如（稀土离子和过渡金属离子）和（ⅱ）形成具有低损耗和低介电常数的微波介电材料（例如MgO，MgTiO_3等）的复合材料。同时，还讨论了弛豫特性与介电可调性之间的关系。

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