A Comparative Study of Nonlinear Microwave Properties in YBa2Cu3O7, TlBaCaCuO and HgBaCaCuO Microstrip Resonators

被引：4

作者：

Ji, Lu ^{[1
]}

Yan, Shaolin ^{[1
]}

Wu, Judy Z. ^{[2
]}

机构：

[1] Nankai Univ, Dept Elect, Tianjin 300071, Peoples R China

[2] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2009年 / 19卷 / 03期

关键词：

HTS; nonlinearity; power handling; EPITAXIAL THIN-FILMS; HGBA2CACU2O6+DELTA; TEMPERATURE; EXCHANGE;

D O I：

10.1109/TASC.2009.2019239

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Microwave nonlinearity is investigated in several high-temperature superconductors (HTS) including YBa2Cu3O7, TlBa2CaCu2O7, Tl2Ba2CaCu2O8, TlBa2Ca2Cu3O9 and HgBa2CaCu2O6+delta microstrip resonators. The critical power, above which nonlinearity becomes a serious concern, was compared with the dc critical current density J(c) at temperatures above 77 K. When plotted at the real temperature scale, P-c and J(c) for each HTS system follow a similar trend near T-c, indicating that a similar mechanism of magnetic pinning limits both P-c and J(c). This result suggests that a better P-c may be achieved in HTS films of enhanced magnetic pinning.

引用

页码：2913 / 2916

页数：4

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