Substrate-mediated control of the microstructure of YBa2Cu3O7-delta thin films

被引：8

作者：

Haage, T

Zegenhagen, J

Cardona, M

Habermeier, HU

机构：

[1] Max-Planck-Inst. Festkorperforschung, D-70569 Stuttgart

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1997年 / 251卷 / 1-2期

关键词：

microstructure; YBa2Cu3O7-delta thin films;

D O I：

10.1016/S0925-8388(96)02763-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have studied the surface of vicinal SrTiO3(001) substrates and thereon deposited YBa2Cu3O7-delta (YBCO) thin films by UHV-scanning tunneling microscopy (STM). We discuss the influence of the uniformity of substrate terraces on film growth. STM images indicate, that a combination of island and step-flow growth occurs on 1.2 degrees miscut SrTiO3. In particular, a regular nanoscale step structure of a 10 degrees miscut SrTiO3 surface generates an almost periodic surface structure of the YBCO films. Our findings indicate that a substrate-mediated control of the surface structure of YBCO films can be achieved.

引用

页码：23 / 26

页数：4

共 8 条

[1]

CHERNOV AA, 1984, MODERN CRYSTALLOGRAP, V3, P116

[2] Substrate-mediated anisotropy of transport properties in YBa2Cu3O7-delta thin films [J].