THE MICROSTRUCTURE AND ELECTRICAL-PROPERTIES OF LOW-RESISTANCE CONTACTS TO YBA2CU3O7-DELTA CERAMICS

被引：1

作者：

HOLLIN, CA ^{[1
]}

ABELL, JS ^{[1
]}

GILBERD, PW ^{[1
]}

机构：

[1] VICTORIA UNIV WELLINGTON,DEPT PHYS,WELLINGTON,NEW ZEALAND

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1995年 / 8卷 / 01期

关键词：

D O I：

10.1088/0953-2048/8/1/002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Contacts with resistivities of 10(-8) Ohm cm(2) or less, at temperatures below the T-c of the underlying YBCO material, have been formed by incorporating gold wires into silver contact pads in a single heat treatment. Voltage-current characteristics of these contacts show superconducting behaviour. Microstructural cross-sections show an Ag/Au alloy with an Ag:Au atomic ratio of 3:1. Contacts made by applying wires after the silver heat treatment, which do not form an Ag/Au alloy, show residual resistances below T-c of around 0.5-50 m Ohm. Susceptibility and resistivity measurements were not suitable for critically differentiating between contact methods or treatment temperatures.

引用

页码：6 / 14

页数：9

共 13 条

[1] METHOD FOR MAKING LOW-RESISTIVITY CONTACTS TO HIGH-TC SUPERCONDUCTORS [J].

EKIN, JW ;

PANSON, AJ ;

BLANKENSHIP, BA .

APPLIED PHYSICS LETTERS, 1988, 52 (04) :331-333

[2] HIGH-TC SUPERCONDUCTOR NOBLE-METAL CONTACTS WITH SURFACE RESISTIVITIES IN THE 10-10 OMEGA-CM2 RANGE [J].

EKIN, JW ;

LARSON, TM ;

BERGREN, NF ;

NELSON, AJ ;

SWARTZLANDER, AB ;

KAZMERSKI, LL ;

PANSON, AJ ;

BLANKENSHIP, BA .

APPLIED PHYSICS LETTERS, 1988, 52 (21) :1819-1821

[3] LOW RESISTANCE CONTACTS TO YBA2CU3O7-DELTA-CERAMICS [J].

HOLLIN, CA ;

ABELL, JS ;

GILBERD, PW .

JOURNAL OF THE LESS-COMMON METALS, 1990, 164 :1571-1578

[4] GOLD CONTACTS ON SUPERCONDUCTING CRYSTALS OF YBA2CU3O7 WITH VERY LOW CONTACT RESISTIVITY [J].

JING, TW ;

WANG, ZZ ;

ONG, NP .

APPLIED PHYSICS LETTERS, 1989, 55 (18) :1912-1914

[5] ANDREEV REFLECTION AND THE PROXIMITY EFFECT IN AU-YBA2CU3O7 JUNCTIONS WITH ULTRA-LOW INTERFACE RESISTANCE [J].

JING, TW ;

WANG, ZZ ;

ONG, NP .

PHYSICA C, 1989, 162 :1061-1062

[6] ANISOTROPIC PROXIMITY COUPLING IN SMALL YBA2CU3O7-NORMAL-PB JUNCTIONS [J].

LEE, M ;

LEW, D ;

EOM, CB ;

GEBALLE, TH ;

BEASLEY, MR .

APPLIED PHYSICS LETTERS, 1990, 57 (11) :1152-1154

[7] IMPROVEMENT OF POLYCRYSTALLINE Y-BA-CU-O BY THE ADDITION OF SILVER [J].

PETERSON, GG ;

WEINBERGER, BR ;

LYNDS, L ;

KRASINSKI, HA .

JOURNAL OF MATERIALS RESEARCH, 1988, 3 (04) :605-609

[8] LOW-RESISTANCE CONTACTS ON YBA2CU3O7-DELTA CERAMICS PREPARED BY DIRECT WIRE BONDING METHODS [J].

SUZUKI, Y ;

KUSAKA, T ;

AOYAMA, T ;

YOTSUYA, T ;

OGAWA, S .

APPLIED PHYSICS LETTERS, 1989, 54 (07) :666-668

[9] GRAIN-GROWTH ENHANCEMENT IN THE YBA2CU3O7-DELTA SUPERCONDUCTOR BY SILVER-OXIDE DOPING [J].

TIEFEL, TH ;

JIN, S ;

SHERWOOD, RC ;

DAVIS, ME ;

KAMMLOTT, GW ;

GALLAGHER, PK ;

JOHNSON, DW ;

FASTNACHT, RA ;

RHODES, WW .

MATERIALS LETTERS, 1989, 7 (11) :363-366

[10] HIGH-PERFORMANCE SILVER OHMIC CONTACTS TO YBA2CU3O6+X SUPERCONDUCTORS [J].

TZENG, Y ;

HOLT, A ;

ELY, R .

APPLIED PHYSICS LETTERS, 1988, 52 (02) :155-156

← 1 2 →