YBA2CU3O7-DELTA THIN-FILM GRADIOMETERS - FABRICATION AND PERFORMANCE

被引：36

作者：

EIDELLOTH, W

OH, B

ROBERTAZZI, RP

GALLAGHER, WJ

KOCH, RH

机构：

来源：

APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 26期

关键词：

D O I：

10.1063/1.105657

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have fabricated and tested superconducting first-order gradiometers made from YBa2Cu3O7-delta (YBCO) thin-film flux transformers coupled to YBCO dc SQUIDS. The flux transformers consisted of 10-turn input coils with 5-mu-m linewidth and two pick-up loops with 600-mu-m linewidth, each of which surrounded an area of 2.1 by 2.8 mm. All levels were patterned by wet etching. A magnetic field gradient of 1 nT/m resulted in a flux of 5.8 X 10(-4) PHI in the SQUID which corresponds to a responsivity of 1.21 X 10(-9) m3. The 1/f noise level at 77 K and 10 Hz was 0.6 nT/m square-root Hz and was dominated by SQUID noise.

引用

页码：3473 / 3475

页数：3

共 7 条

[1] WET ETCH PROCESS FOR PATTERNING INSULATORS SUITABLE FOR EPITAXIAL HIGH-TC SUPERCONDUCTING THIN-FILM MULTILEVEL ELECTRONIC-CIRCUITS
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[2] LOW-NOISE YBA2CU3O7-DELTA GRAIN-BOUNDARY JUNCTION DC SQUIDS
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[3] MAGNETIC HYSTERESIS IN INTEGRATED LOW-TC SQUID GRADIOMETERS
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[4] YBACUO INPUT COILS WITH LOW TC AND HIGH-TC SQUIDS
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[5] MULTILEVEL YBACUO FLUX TRANSFORMERS WITH HIGH-TC SQUIDS - A PROTOTYPE HIGH-TC SQUID MAGNETOMETER WORKING AT 77-K
OH, B
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EIDELLOTH, W
[J]. APPLIED PHYSICS LETTERS, 1991, 59 (01) : 123 - 125
[6] SHOKOOHI FK, 1990, APPL PHYS LETT, V55, P2661
[7] SUPERCONDUCTING THIN-FILM FLUX TRANSFORMERS OF YBA2CU3O7-X
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