THE SYSTEM BA2CUO3+DELTA-SR2CUO3

被引：5

作者：

MAZZA, D

VALLINO, M

ABBATTISTA, F

DELMASTRO, S

机构：

[1] Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1990年 / 25卷 / 04期

关键词：

D O I：

10.1016/0254-0584(90)90127-V

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This system would be characterized by the presence of two fundamental mixed crystal fields: the first (0≤x≤0.5) formed by solids with tetragonal symmetry, deriving from Ba2CuO3+δ; the second (0.7≤x≤2) formed by solids with orthorhombic symmetry and structurally related to Sr2CuO3 characterized by a preferential presence of oxygen vacancies along bo. The solids whose compositions are in the range 0.5≤ x ≤0.7 would result in a mechanical mixture of the limit terms of the two above fields. However, inside the large field of orthorhombic mixed crystals, in some terms with 0.8≤x≤1 a structure ordered in respect to Ba and Sr ions would appear, which could imply appreciable changes of the cell parameters and oxygen content. © 1990.

引用

页码：385 / 391

页数：7

共 11 条

[1] RESEARCH ON THE SYSTEM BAO-LA2O3-CUO-O .1. THE JOIN BA2CUO3+DELTA-BA1.33LA0.67CUO3+DELTA [J].

ABBATTISTA, F ;

BRISI, C ;

DELMASTRO, S ;

LUCCOBORLERA, M ;

MAZZA, D ;

VALLINO, M .

MATERIALS CHEMISTRY AND PHYSICS, 1989, 24 (1-2) :147-156

[2] RESEARCH ON THE SYSTEM BAO-LA2O3-CUO-O .3. LAYERED PEROVSKITES AO. (ABO3)N WITH N=2 AND 3 [J].

ABBATTISTA, F ;

MAZZA, D ;

VALLINO, M .

MATERIALS CHEMISTRY AND PHYSICS, 1990, 25 (03) :251-257

[3] NEW PHASES IN THE MOST BASIC ZONE OF THE SYSTEM BA-CU-O [J].

ABBATTISTA, F ;

BRISI, C ;

LUCCOBORLERA, M ;

VALLINO, M .

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA D-CONDENSED MATTER ATOMIC MOLECULAR AND CHEMICAL PHYSICS FLUIDS PLASMAS BIOPHYSICS, 1988, 10 (05) :611-614

[4] RESEARCH ON THE SYSTEM BAO-LA2O3-CUO-O .2. THE SOLID-SOLUTION LA2-XBA1+XCUO5-X/2+DELTA [J].