Phase stability and interfacial structures in the SrO-SrTiO3 system

被引：138

作者：

McCoy, MA ^{[1
]}

Grimes, RW ^{[1
]}

Lee, WE ^{[1
]}

机构：

[1] UNIV SHEFFIELD,DEPT MAT ENGN,SHEFFIELD,S YORKSHIRE,ENGLAND

来源：

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1997年 / 75卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1080/01418619708207205

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The phase stability of the subsolidus region in the composition regime SrO-SrTiO3 has been studied using a combination of atomistic computer simulation techniques and high-resolution electron microscopy (HREM). Both predictions from atomistic calculations and HREM observations suggest that at low concentrations (less than 50mol% excess SrO), strontium-rich nonstoichiometry is accommodated by formation of a specific Ruddlesden-Popper defect phase (Sr3Ti2O7) With overall composition maintained by a coherent intergrowth of Sr3Ti2O7 and SrTiO3 phases. A model is proposed for the atomic structure of the Sr3Ti2O7-rSrTiO(3) interface.

引用

页码：833 / 846

页数：14

共 25 条

[21] ELECTRON-MICROSCOPE STUDY OF PEROVSKITE-RELATED OXIDES IN SR-TI-O SYSTEM [J].

TILLEY, RJD .

JOURNAL OF SOLID STATE CHEMISTRY, 1977, 21 (04) :293-301

[22] NON-STOICHIOMETRY IN ALKALINE-EARTH EXCESS ALKALINE-EARTH TITANATES [J].

UDAYAKUMAR, KR ;

CORMACK, AN .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1989, 50 (01) :55-60

[23] STRUCTURAL ASPECTS OF PHASE-EQUILIBRIA IN THE STRONTIUM-TITANIUM-OXYGEN SYSTEM [J].

UDAYAKUMAR, KR ;

CORMACK, AN .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1988, 71 (11) :C469-C471

[24] VARIABILITY OF THE SR/TI RATIO IN SRTIO3 [J].

WITEK, S ;

SMYTH, DM ;

PICKUP, H .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1984, 67 (05) :372-375

[25]

Wyckoff R. W. G., 1963, Crystal structures, V2nd

← 1 2 3 →