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On the thermal evolution of the crystal structure of SrTeO3: the beta-form at 473 K
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry.
2007 (English)In: Acta Crystallographica Section E: Structure Reports Online, ISSN 1600-5368, E-ISSN 1600-5368, Vol. 63, no 4, I111-I112 p.Article in journal (Refereed) Published
Abstract [en]

As part of a programme to study structural phase transitions in strontium tellurite, SrTeO3, (STO), the structure of the beta-form has been determined at 473 K using single-crystal analysis. Both the structural and non-linear optical measurements indicate an alpha-beta first-order phase-transition temperature that is close to 363 K on heating and 308 K on cooling. The structure of the beta-phase is monoclinic (C2/c) and does not differ essentially from the alpha-phase (C2) configuration. During the alpha-beta phase transition there is a slight rearrangement of the cation building blocks [n-vertex SrOn polyhedra (n = 6, 7 or 8) and TeO3 pyramids]; this phase transformation can be described by a displacive mechanism.

Place, publisher, year, edition, pages
2007. Vol. 63, no 4, I111-I112 p.
National Category
Chemical Sciences
URN: urn:nbn:se:uu:diva-145388DOI: 10.1107/S160053680701210XISI: 000245436300006OAI: oai:DiVA.org:uu-145388DiVA: diva2:396159
Available from: 2011-02-09 Created: 2011-02-08 Last updated: 2011-02-09Bibliographically approved

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