ASPECTS OF ANNEALING AND FREE-SURFACE CRYSTALLIZATION OF YBCO THIN-FILMS

被引：5

作者：

FILIPCZUK, SW ^{[1
]}

DRIVER, R ^{[1
]}

SMITH, GB ^{[1
]}

机构：

[1] UNIV TECHNOL SYDNEY,DEPT APPL PHYS,BROADWAY,NSW 2007,AUSTRALIA

来源：

PHYSICA C | 1990年 / 170卷 / 5-6期

关键词：

D O I：

10.1016/0921-4534(90)90016-8

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We describe a method of high temperature annealing in which the control of oxygen partial pressure is the principal experimental determinant in obtaining highly c⊥ oriented thin films of YBa2Cu3O7 - δ on YSZ. Film crystallization, morphology and substrate interactions are discussed with detailed reference to the equilibria existing in the YBCO system. A model based on the melt-assisted crystallization of the precursor tetragonal compound, beginning at the free film surface, is used to explain the observed c⊥ texturing. Excellent Josephson coupling between grains of YBa2Cu3O7 - δ in our films is related to melt-assisted growth. We discuss the adverse effects of annealing in pure oxygen at high temperatures. © 1990.

引用

页码：457 / 468

页数：12

共 36 条

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