【摘要】 介绍一种工作在12 GHz附近的高温超导薄膜微波表面电阻sR测试系统,该系统采用低损耗高介电常数的蓝宝石构成工作在TE011+δ谐振模式的介质谐振器,在77 K时,利用它对高温超导薄膜的微波表面电阻sR进行测试,提高了整个测试系统的品质因素,可成功地用于单片φ50.8 mm较大超导薄膜的无损伤测试,整个测试系统体积小、操作方便,且所需实验条件简单,测试灵敏度高,具有简便、快捷、适合于工业化生产检测的特点。更多还原

【Abstract】 The surface resistance sR of a single piece of high Tc super-conductive thin film can be measured by a sapphire resonator with d+TE011mode non-destructivity, at 77K. By measuring the value of the resonator抯 quality factor, the microwave surface resistance sR of testing sample can be also determined. A new measuring method is presented, and the surface resistance can be calculated. To measure ?0.8mm high Tc super-conductive thin film, a special sapphire resonator working at 12GHz is made and used. The method has advantages of non-destructivity, single sample,high Q value, high sensitivity, convenient experiment setup, small volume, and flexibility in operation.更多还原