A new metallic, ordered perovskite thin film La6.4Sr1.6Cu8O22: Pulsed laser deposition and microstructural characterization

被引：4

作者：

Allen, JL ^{[1
]}

Hervieu, M ^{[1
]}

Mercey, B ^{[1
]}

Hamet, JF ^{[1
]}

Raveau, B ^{[1
]}

机构：

[1] UNIV CAEN,ISMRA,LAB CRISTALLOG & SCI MAT,F-14050 CAEN,FRANCE

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1996年 / 6卷 / 07期

关键词：

D O I：

10.1039/jm9960601141

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：

Pulsed laser deposition has been used to prepare thin films of a new perovskite, La6.4Sr1.6Cu8O22, with ordered oxygen vacancies. Energy dispersive scattering analysis confirms the stoichiometric deposition of the cations from the ceramic target, La6.4Sr1.6Cu8O20. Electron diffraction and high-resolution electron microscopic (HREM) studies show-that the cell parameters are a = b = 2a(p) root 2 and c = a(p) = 3.86 Angstrom, but that the structure of the film differs from the target, bulk material, and suggests that the him. is more oxygenated, according to the:composition La6.4Sr1.6Cu8O22. The HREM images can be simulated from a model in which one-half of the oxygen vacancies in the bulk structure are filled. The him is well crystallized, [110] oriented with respect to the LaAlO3 substrate, and exhibits good metallic conductivity.

引用

页码：1141 / 1147

页数：7

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