• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >The microwave characterization of single crystal lithium and calcium fluoride at cryogenic temperatures
【24h】

The microwave characterization of single crystal lithium and calcium fluoride at cryogenic temperatures

机译：低温下单晶锂和氟化钙的微波表征

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

The whispering-gallery mode method is used for very accurate permittivity and dielectric loss measurements of single crystal lithium fluoride (LiF) and calcium fluoride (CaF2) over the temperature range of 4.5 K to 300 K. The absolute uncertainty in the real part of permittivity was estimated to be less than 0.1%, and it was limited principally by uncertainty in dimensions of the samples. Dielectric losses were measured with uncertainties of about 10% limited by the accuracy of Q-factor measurements. The measured materials exhibited dielectric losses between 2-4 × 10-7 near 5 K. The relative permittivity was evaluated as 6.502 (4.9 K) to 6.844 (296 K) at 17.5 GHz for CaF2 and 8.534 (4.6 K) to 9.063 (300 K) at 13.5 GHz for LiF.
机译：耳语-画廊模式方法用于在4.5 K至300 K的温度范围内对单晶氟化锂（LiF）和氟化钙（CaF2）进行非常精确的介电常数和介电损耗测量。介电常数实部的绝对不确定性估计小于0.1％，并且主要受到样品尺寸不确定性的限制。介电损耗的测量不确定性受到Q因子测量精度的限制，约为10％。被测材料在5 K附近表现出2-4×10-7之间的介电损耗。在17.5 GHz下，对于CaF2，相对介电常数的评估为6.502（4.9 K）至6.844（296 K），对于8.534（4.6 K）至9.063（300） LiF在13.5 GHz时的K）。

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