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Polar-to-centrosymmetric phase transition in Ca1.5Sr1.5(VO4)(2) and the polar phase structureстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Belik A.A., Stefanovich S.Y., Lazoryak B.I.
- Журнал: Materials Research Bulletin
- Том: 36
- Номер: 10
- Год издания: 2001
- Издательство: Pergamon Press Ltd.
- Местоположение издательства: United Kingdom
- Первая страница: 1873
- Последняя страница: 1880
- DOI: 10.1016/S0025-5408(01)00684-5
- Аннотация: Ca1.5Sr1.5(VO4)(2) was synthesized by the solid-state method at 1150 degreesC followed by quenching in air. Crystal structure of Ca1.5Sr1.5(VO4)(2) was refined by Rietveld method: space group R3c, a = 11.0152(1) Angstrom, c = 38.8937(2) Angstrom, Z = 21. The structure of Ca1.5Sr1.5(VO4)(2) is isotypic with Ca-3(VO4)(2). Here the MS site is fully occupied by calcium canons and the M4 site is half-occupied by strontium canons. The M1-M3 sites are occupied by strontium and calcium canons. The amount of strontium canons in the M1-M3 sites correlates with the size of these positions in the host structure of Ca-3(VO4)(2). The second harmonic generation in Ca1.5Sr1.5(VO4)(2) (I-2 omega/I-2 omega(SiO2) approximate to 8) is close to Ca-3(VO4)(2) (I-2 omega/I-2 omega(SiO2) approximate to 10) but substantially less than in Ca9R(VO4)(7) (for R = Dy I-2 omega/ I-2 omega(SiO2) approximate to 30). (C) 2001 Elsevier Science Ltd. All rights reserved.
- Добавил в систему: Лазоряк Богдан Иосипович