CRYOGENIC DIELECTRIC-PROPERTIES OF SAPPHIRE AT 2.45 GHZ

被引：10

作者：

BUCKLEY, SN

AGNEW, P

PELLS, GP

机构：

[1] Reactor Services, Materials and Chemistry Division, Harwell Laboratory, Didcot, Oxfordshire

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 1994年 / 27卷 / 10期

关键词：

D O I：

10.1088/0022-3727/27/10/033

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An exceptionally sensitive calorimetric technique has been devised for measuring microwave absorption by small samples of ultra-low-loss dielectrics at cryogenic temperatures. The loss factor of sapphire at 2.45 GHz diminished progressively with decreasing temperature from 3.5 x 10(-5) at 300 K down to 2 x 10(-10) at 4.2 K. The rate of decrease showed no tendency to attenuate at temperatures down to 4.2 K.

引用

页码：2203 / 2209

页数：7

共 18 条

[1]

AGNEW P, 1982, UNPUB

[2] A HIGH-Q SAPPHIRE LOADED SUPERCONDUCTING CAVITY RESONATOR [J].