ELECTRONIC NOISE PROPERTIES OF BARIUM POTASSIUM BISMUTH OXIDE (BKBO) THIN FILMS

被引：0

作者：

Lacoe, R. C. ^{[1
]}

Gutierrez, D. A. ^{[1
]}

Wendt, J. P. ^{[1
]}

Hu, R. ^{[2
]}

Burch, J. F. ^{[2
]}

Lee, A. E. ^{[2
]}

机构：

[1] Aerosp Corp, Elect Technol Ctr, POB 92957, Los Angeles, CA 90009 USA

[2] TRW Space & Technol Grp, Redondo Beach, CA 90278 USA

来源：

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

关键词：

Barium potassium bismuth oxide - Electronic noise;

D O I：

10.1109/77.234017

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：

We have measured the low frequency electrical "noise fluctuations in superconducting barium potassium bismuth oxide (BKBO) thin films deposited by magnetron sputtering and by laser ablation. The excess noise in the presence of a bias current was 1/f noise. The magnitudes of the room temperature 1/f noise were somewhat higher than observed in the best cuprate high temperature superconducting thin films. The noise magnitude did not scale as expected with film geometry, and the noisier BKBO film also had the highest superconducting transition temperature. We suggest that etch pits observed on the patterned films contributed to the total 1/f noise measured. Both films exhibit a peak in the noise voltage at the foot of the superconducting transition which cannot be explained from a model of 1/f noise resulting from temperature fluctuations.

引用

页码：2940 / 2943

页数：4

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