PHASE-STABILITY AND INTERFACIAL STRUCTURES IN THE SRO-SRTIO3 SYSTEM

Authors
MCCOY MA GRIMES RW LEE WE
Citation
Ma. Mccoy et al., PHASE-STABILITY AND INTERFACIAL STRUCTURES IN THE SRO-SRTIO3 SYSTEM, Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties, 75(3), 1997, pp. 833-846
Citations number
25
Categorie Soggetti
Physics, Applied","Material Science","Physics, Condensed Matter","Metallurgy & Metallurigical Engineering
Journal title
Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties → ACNP
ISSN journal
13642804
Volume
75
Issue
3
Year of publication
1997
Pages
833 - 846
Database
ISI
SICI code
1364-2804(1997)75:3<833:PAISIT>2.0.ZU;2-N
Abstract
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 su ggest that at low concentrations (less than 50mol% excess SrO), stront ium-rich nonstoichiometry is accommodated by formation of a specific R uddlesden-Popper defect phase (Sr3Ti2O7) With overall composition main tained by a coherent intergrowth of Sr3Ti2O7 and SrTiO3 phases. A mode l is proposed for the atomic structure of the Sr3Ti2O7-rSrTiO(3) inter face.