YBCO DC SQUID ON MgO BICRYSTAL SUBSTRATE WITH FLUX TRANSFORMER

被引：2

作者：

Lin, J. ^{[1
]}

Huang, T. W. ^{[1
]}

Wang, J. J. ^{[1
]}

Lu, H. B. ^{[1
]}

Tu, S. L. ^{[1
]}

Yang, S. J. ^{[1
]}

Hsu, S. E. ^{[1
]}

机构：

[1] Chung Shan Inst Sci & Technol, Mat R&D Ctr, Taoyuan, Taiwan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1993年 / 3卷 / 01期

关键词：

D O I：

10.1109/77.233948

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：

A Superconducting Quantum Interference Device (SQUID) was fabricated from a YBCO thin film on MgO [100] bi-crystal substrates. The resulted device contained a pancake shape SQUID with a 25 x 25 mu m(2) square hole at center. A pair of microbridges were attached aside of the SQUID in which a 5 inn slot was located at the center and extended to the square hole. The phi-V measurement showed dV/d phi was about 40 and 4 mu V/phi 0 at 4.4K and 60 K, respectively. The flux transformer contained a 3 x 3 mm pickup loop and 75 x 75 mu m(2) coupling coil in which the center of the square hole of the SQUID was carefully aligned. Before the SQUID and flux transformer pressed together, a thin layer SrTiO3 was deposited these devices as an insulator. The flux transformer has been found to enhance the sensitivity of the SQUID.

引用

页码：2438 / 2441

页数：4

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