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

[1] COMPUTER-SIMULATION STUDIES OF STRONTIUM-TITANATE [J].

AKHTAR, MJ ;

AKHTAR, ZUN ;

JACKSON, RA ;

CATLOW, CRA .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1995, 78 (02) :421-428

[2] ON THE DEFECT STRUCTURE OF STRONTIUM-TITANATE WITH EXCESS SRO [J].

BALACHANDRAN, U ;

EROR, NG .

JOURNAL OF MATERIALS SCIENCE, 1982, 17 (07) :2133-2140

[3]

Binks D.J., 1994, COMPUTATIONAL MODELI

[4]

CATLOW CRA, 1989, J CHEM SOC FARADAY T, V85

[5] SOLUBILITY OF CAO IN CATIO3 [J].

CEH, M ;

KOLAR, D .

JOURNAL OF MATERIALS SCIENCE, 1994, 29 (23) :6295-6300

[6] NON-STOICHIOMETRY IN SRTIO3 [J].

CHAN, NH ;

SHARMA, RK ;

SMYTH, DM .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1981, 128 (08) :1762-1769

[7] THEORY OF THE DIELECTRIC CONSTANTS OF ALKALI HALIDE CRYSTALS [J].

DICK, BG ;

OVERHAUSER, AW .

PHYSICAL REVIEW, 1958, 112 (01) :90-103

[8] TINO2N-1 MAGNELI PHASE FORMATION IN SRTIO3 DIELECTRICS [J].

FUJIMOTO, M ;

WATANABE, M .

JOURNAL OF MATERIALS SCIENCE, 1985, 20 (10) :3683-3690

[9] PLANAR FAULTS AND GRAIN-BOUNDARY PRECIPITATION IN NON-STOICHIOMETRIC (SR, CA)TIO3 CERAMICS [J].

FUJIMOTO, M ;

TANAKA, J ;

SHIRASAKI, S .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1988, 27 (07) :1162-1166

[10] MARVIN - A NEW COMPUTER CODE FOR STUDYING SURFACES AND INTERFACES AND ITS APPLICATION TO CALCULATING THE CRYSTAL MORPHOLOGIES OF CORUNDUM AND ZIRCON [J].

GAY, DH ;

ROHL, AL .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1995, 91 (05) :925-936

← 1 2 3 →