DC SQUID MAGNETOMETERS FROM SINGLE LAYERS OF YBA2CU3O7-X

被引：107

作者：

KOELLE, D ^{[1
]}

MIKLICH, AH ^{[1
]}

LUDWIG, F ^{[1
]}

DANTSKER, E ^{[1
]}

NEMETH, DT ^{[1
]}

CLARKE, J ^{[1
]}

机构：

[1] LAWRENCE BERKELEY LAB, DIV MAT SCI, BERKELEY, CA 94720 USA

来源：

APPLIED PHYSICS LETTERS | 1993年 / 63卷 / 16期

关键词：

D O I：

10.1063/1.110526

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have fabricated magnetometers patterned in a single layer of YBa2Cu3O7-x involving dc superconducting quantum interference devices (SQUIDs) with bicrystalline grain boundary junctions. The magnetometers consist of either a SQUID with a large area square washer or a single turn pickup loop coupled directly to the body of a small area SQUID. We found that the transfer function falls off with increasing SQUID inductance much more rapidly than predicted; implications for magnetometer performance are discussed. When operated at 77 K with a bias reversal technique a directly coupled magnetometer had a noise of (105 +/- 10) fT Hz -1/2 at 1 kHz, increasing to (145 +/- 10) fT Hz -1/2 at 1 Hz.

引用

页码：2271 / 2273

页数：3

共 17 条

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