SUPERCONDUCTING THIN-FILM FLUX TRANSFORMERS OF YBA2CU3O7-X

被引：29

作者：

WELLSTOOD, FC ^{[1
]}

KINGSTON, JJ ^{[1
]}

FERRARI, MJ ^{[1
]}

CLARKE, J ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,CTR ADV MAT,DIV MAT & CHEM SCI,BERKELEY,CA 94720

来源：

APPLIED PHYSICS LETTERS | 1990年 / 57卷 / 18期

关键词：

D O I：

10.1063/1.104015

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using a three-layer YBa2Cu3O7-x-SrTiO 3-YBa2Cu3O7-x in situ laser deposition process, we have constructed thin-film flux transformers which have pickup loops 10 mm on a side and input coils with ten turns. Each layer was patterned with a shadow mask or photolithography. The flux transformers were inductively coupled to a dc superconducting quantum interference device (SQUID) at 4.2 K to determine their transition temperature, and the temperature dependence of their critical current and coupling efficiency. The best flux transformer had a transition temperature of 77 K, and enhanced the magnetic field response of the SQUID by a factor of 9.5.

引用

页码：1930 / 1932

页数：3

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