PREPARATION AND STRUCTURAL CHARACTERIZATION OF THIN EPITAXIAL BI2SR2CACU2O8+DELTA FILMS WITH T(C) IN THE 90-K RANGE

被引：59

作者：

WAGNER, P

HILLMER, F

FREY, U

ADRIAN, H

STEINBORN, T

RANNO, L

ELSCHNER, A

HEYVAERT, I

BRUYNSERAEDE, Y

机构：

[1] TH DARMSTADT, INST MAT WISSENSCH, D-64289 DARMSTADT, GERMANY

[2] BAYER AG, ZENT FORSCHUNGSINST, D-47829 KREFELD, GERMANY

[3] CATHOLIC UNIV LEUVEN, VASTE STOF FYS MAGNETISME LAB, B-3030 HEVERLEE, BELGIUM

[4] UNIV PARIS 07, PHYS SOLIDES GRP, F-75251 PARIS 05, FRANCE

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1993年 / 215卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(93)90372-W

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Thin films of Bi2Sr2CaCu2O8+delta with T(c) up to 92 K were prepared by an in situ sputtering method on SrTiO3 (100) and LaAlO3 (100) substrates. A strong c-axis orientation of the film growth with low mosaic spread and full epitaxy within the ab-plane were confirmed by X-ray diffraction in Bragg-Brentano and four-circle geometry. Rutherford backscattering and channeling confirm the correct film composition and highly textured growth with a minimum yield of 23%. The surface morphology of the films was examined by STM and SEM studies, revealing a low density of precipitates and the absence of screw dislocations. The depth profile of the composition was investigated by secondary neutrals mass spectroscopy (SNMS).

引用

页码：123 / 131

页数：9

共 28 条

[1] CORRELATION BETWEEN THE MAGNITUDE OF THE SUPERCONDUCTING TRANSITION-TEMPERATURE AND THE NORMAL-STATE MAGNETIC-SUSCEPTIBILITY IN BI2SR2CACU2O8+Y AND TL2BA2CUO6+Y AS A FUNCTION OF OXYGEN-CONTENT [J].