SUPERCONDUCTING YBCO AND YBCO-AG THICK-FILMS (T-C(0)=92K) BY DIP COATING ON GDBA2HFO5.5, A NEW PEROVSKITE CERAMIC SUBSTRATE

被引：4

作者：

THOMAS, JK

KOSHY, J

KURIAN, J

DAMODARAN, AD

机构：

[1] Regional Research Laboratory (CSIR), Trivandrum

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1995年 / 8卷 / 07期

关键词：

D O I：

10.1088/0953-2048/8/7/007

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A new ceramic perovskite, GdBa2HfO5.5, has been synthesized and developed for use as substrate for the YBa2Cu3O7-delta superconductor. The dielectric constant and toss factor of this material are in a range suitable for its use as substrate for microwave applications. No detectable chemical reaction between YBa2Cu3O7-delta and GdBa2HfO5.5 was observed even under severe heat treatment. YBa2Cu2O7-delta and YBa2Cu3O7-delta-Ag thick films dip coated on GdBa2HfO5.5 substrate gave a zero-resistivity superconducting transition of 92 K. The critical current density (J(c)) of YBa2Cu3O7-delta thick film was 3 x 10(3) A cm(-2) whereas a current density of 2 x 10(4) A cm(-2) was obtained for YBa2Cu3O7-delta-Ag thick film. The YBa2Cu3O7-delta-Ag thick film showed preferred (001) orientation on polycrystalline GdBa2HfO5.5 substrate.

引用

页码：525 / 528

页数：4

共 12 条

[1] LOW SURFACE-RESISTANCE YBCO THICK-FILMS [J].