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Existence region of phases of laminated perovskite-like structre of A/sub 2/B/sub 2/O/sub 7/ composition

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Abstract

Generalizing the known data for ferroelectrics of A/sub 2/B/sub 2/O/sub 7/ type (LnTi/sub 2/O/sub 7/, in particular) geometrical conditions of existence of laminated perovskite-like structure are determined: 0.603 A < anti Rsub(Bsup(6)) <= 0.665 A, anti Rsub(Asup(12))/Rsub(Bsup(6)) > 2.045. The geometrical conditions presented are necessary but not sufficient. A supposition is made that phases GaLnTiNbO/sub 7/ (Ln = Pr - Eu) and CaLnTiTaO/sub 7/ (Ln = La - Eu) with laminated perovskite-like structure can be prepared under high pressures.
Authors:
Sych, A M; Titov, Yu A [1] 
  1. Kievskij Gosudarstvennyj Univ. (Ukrainian SSR)
Publication Date:
Jun 01, 1982
Product Type:
Journal Article
Reference Number:
AIX-14-740924; EDB-83-096217
Resource Relation:
Journal Name: Zh. Neorg. Khim.; (USSR); Journal Volume: 27:6; Other Information: For English translation see the journal Russian Journal of Inorganic Chemistry (UK)
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CALCIUM OXIDES; PHASE STUDIES; CERIUM OXIDES; EUROPIUM OXIDES; FERROELECTRIC MATERIALS; GALLIUM OXIDES; LANTHANUM OXIDES; NEODYMIUM OXIDES; NIOBIUM OXIDES; PRASEODYMIUM OXIDES; PROMETHIUM OXIDES; SAMARIUM OXIDES; TANTALUM OXIDES; TITANIUM OXIDES; CRYSTAL STRUCTURE; PEROVSKITES; ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CERIUM COMPOUNDS; CHALCOGENIDES; EUROPIUM COMPOUNDS; GALLIUM COMPOUNDS; LANTHANUM COMPOUNDS; NEODYMIUM COMPOUNDS; NIOBIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PRASEODYMIUM COMPOUNDS; PROMETHIUM COMPOUNDS; RARE EARTH COMPOUNDS; SAMARIUM COMPOUNDS; TANTALUM COMPOUNDS; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; 400201* - Chemical & Physicochemical Properties
OSTI ID:
6201317
Country of Origin:
USSR
Language:
Russian
Other Identifying Numbers:
Journal ID: CODEN: ZNOKA
Submitting Site:
HEDB
Size:
Pages: 1551-1554
Announcement Date:
Mar 01, 1983

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Citation Formats

Sych, A M, and Titov, Yu A. Existence region of phases of laminated perovskite-like structre of A/sub 2/B/sub 2/O/sub 7/ composition. USSR: N. p., 1982. Web.
Sych, A M, &amp; Titov, Yu A. Existence region of phases of laminated perovskite-like structre of A/sub 2/B/sub 2/O/sub 7/ composition. USSR.
Sych, A M, and Titov, Yu A. 1982. "Existence region of phases of laminated perovskite-like structre of A/sub 2/B/sub 2/O/sub 7/ composition." USSR.
@misc{etde_6201317,
title = {Existence region of phases of laminated perovskite-like structre of A/sub 2/B/sub 2/O/sub 7/ composition}
 author = {Sych, A M, and Titov, Yu A}
 abstractNote = {Generalizing the known data for ferroelectrics of A/sub 2/B/sub 2/O/sub 7/ type (LnTi/sub 2/O/sub 7/, in particular) geometrical conditions of existence of laminated perovskite-like structure are determined: 0.603 A < anti Rsub(Bsup(6)) <= 0.665 A, anti Rsub(Asup(12))/Rsub(Bsup(6)) > 2.045. The geometrical conditions presented are necessary but not sufficient. A supposition is made that phases GaLnTiNbO/sub 7/ (Ln = Pr - Eu) and CaLnTiTaO/sub 7/ (Ln = La - Eu) with laminated perovskite-like structure can be prepared under high pressures.}
 journal = []
 volume = {27:6}
 journal type = {AC}
 place = {USSR}
 year = {1982}
 month = {Jun}
 }