GROWTH-BEHAVIOR AND SUPERCONDUCTIVITY OF BISRCACUO FILMS ON MGO(100) SUBSTRATES

被引：7

作者：

LIN, WT

CHU, HC

CHU, YL

LIN, HS

FANG, YK

CHANG, CY

WU, PT

KUNG, JH

机构：

[1] NATL CHENG KUNG UNIV,INST ELECT & COMP ENGN,TAINAN,TAIWAN

[2] IND TECHNOL RES INST,MAT RES LABS,HSINCHU,TAIWAN

来源：

THIN SOLID FILMS | 1990年 / 185卷 / 01期

关键词：

Bismuth Strontium Calcium Copper Oxides - High Temperature Superconductors - Oxide Superconductors;

D O I：

10.1016/0040-6090(90)90015-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The formation temperatures of Bi2Sr2CuOx (2201) and Bi2Sr2CaCu2Ox (2212) phases are about 550°C and 775°C respectively for sputtered films on MgO(100) substrates. A preferred grain growth appeared at 820°C. A reversible transformation between the 2201 and 2212 phases was observed in the temperature range 780-870°C. Two-step annealing enabled the zero-resistance temperature T0 of films with non-stoichiometric composition to be higher than 78K. The syntactic growth of the 2201 and 2212 phases, and the twin and the low angle grain boundary of the 2212 phase were also present. Two modes of localized epitaxial growth of 2212 grains on MgO(100) substrates were observed. The orientation relationships between the 2212 overlayer and the MgO substrate are (001)2212(100)MgO and [100]2212[011]MgO, and (001)2212(100)MgO and [100]2212[010]MgO. No interfacial reaction between the BiSrCaCuO film and the MgO substrate during heat treatment was observed. © 1990.

引用

页码：159 / 167

页数：9

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