HEAT-TREATMENT EFFECT ON THE METAL CONTACT OF HIGH-TC (PB, BI)SRCACUO SUPERCONDUCTOR

被引:20
作者
CHEN, YC
CHONG, KK
MEEN, TH
机构
[1] Institute of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 1991年 / 30卷 / 01期
关键词
SUPERCONDUCTOR; BI-SR-CA-CU-O SYSTEM; VACUUM EVAPORATION; HIGH-TC PHASE; CONTACT RESISTIVITY;
D O I
10.1143/JJAP.30.33
中图分类号
O59 [应用物理学];
学科分类号
摘要
Better metal electrode can be obtained by heat treatment which causes deeper diffusion of metal particles into the (Pb, Bi)SrCaCuO superconductor to improve contacts between metal electrodes and the sample. However, high-T(c) phase of the specimen was destroyed at 700-degrees-C and the sample showed semiconducting behaviour. Low room temperature contact resistivity was obtained about 3.21 x 10(-4) (OMEGA-cm-2) and 2.34 x 10(-6) (OMEGA-cm-2) at 77 K for a sample with evaporating silver electrodes and annealed at 600-degrees-C for2 hours. Non-ohmic contacts are observed for the indium and aluminum terminals.
引用
收藏
页码:33 / 37
页数:5
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