Effect of substrate temperature and oxygen pressure on the microstructure of thin YBa2Cu3O7-δ film deposited on MgO by pulsed-laser ablation

被引：8

作者：

Norton, M.Grant ^{[1
]}

Carter, C.Barry ^{[1
]}

机构：

[1] Cornell Univ, Ithaca, United States

来源：

Physica C: Superconductivity and its Applications | 1991年 / 182卷 / 1-3期

关键词：

Ablation--Laser Applications - Ceramic Materials - Yttrium Compounds--Microstructure;

D O I：

10.1016/0921-4534(91)90452-5

中图分类号：

学科分类号：

摘要：

The microstructure of thin YBa2Cu2O7-δ films, prepared by pulsed-laser ablation, at a range of oxygen pressures and substrate temperatures has been investigated. The thin films were deposited directly onto specially prepared, electron-transparent thin-foil substrates of (001)-oriented MgO. Independent variation of the two parameters was found to affect the microstructure of the thin film. For example, at low substrate temperatures (600°C), the film was found to consist of small ( 100 nm diam.) isolated islands. These larger islands were faceted parallel to low index planes (e.g. {100} and {110}). The differences observed in the microstructure of films grown at the two temperatures was related to the degree of mobility of the ablated species on the substrate surface.

引用

页码：30 / 38