ZrO_2的掺杂对于单畴YBCO超导块材的影响  

THE DESIGN OF S-BAND HIGH-TEMPERATUER SUPERCONDUCTOR FILTER

作　　者：樊静[1] 杨万民[1] 李国政[1] 程晓芳[1] 郭晓丹[1] 朱维君[1] 

机构地区：[1]陕西师范大学,物理与信息技术学院,西安710062

出　　处：《低温物理学报》2010年第2期153-156,共4页Low Temperature Physical Letters

基　　金：国家863项目(批准号:2007AA03Z241);国家自然科学基金资助(批准号:50872079)资助的课题~~

摘　　要：研究了在Y211中掺入ZrO2对于用顶部籽晶熔渗方法制备YBCO块材的影响,以及不同掺杂比例对于样品表面形貌和磁悬浮力的影响.实验表明,随着ZrO2掺杂量的增加,样品的磁悬浮力有增大的趋势.这种现象可能是由于ZrO2的掺杂在样品中形成了磁通钉扎中心,有效的提高了超导体的物理性能.In this paper,The models of HTSC（high temperature superconductivity）resonators are built using CAD programs with full-wave field simulation method. The filter is manufactured on double-sided HTSC YBCO（YBa2Cu3O7）film of 400 nm thickness on a LaAIO3 substrate of 0.5 mm and has internal coupling. It is tested at 77K（the temperature of Liquid nitrogen）. Without any tuning,the filter has a bandwidth of 200 MHz;and its center frequency is 3.4 GHz,the insertion loss is〈0.2dB,and the return loss is〉-20dB,band rejection is better than 50 dB. Such a structure of high temperature superconducting filters will have a wide application prospect in mobile communications and satellite communications fields.

关 键 词：YBCO超导体 掺杂 钉扎中心 

分 类 号：TM26[一般工业技术—材料科学与工程]