Order-disorder reactions in the ferroelectric perovskites Pb(Sc1/2Nb1/2)O3 and Pb(Sc1/2Ta1/2)O3: II. Relation between ordering and properties

C.G.F. Stenger, A.J. Burggraaf

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Abstract

The ordering of the trivalent and pentavalent cations in the perovskites Pb(Sc1/2Nb1/2)O3 and Pb(Sc1/2Ta1/2)O3 can be varied by suitable heat treatments. The degree as well as the kind of order strongly affects the character of the FE - PE phase transition. A spatially homogeneous disorder leads to a diffuse phase transition whereas a hybrid crystal with a nonhomogeneous disorder shows a sequence of two FE - PE transitions.
Original languageEnglish
Pages (from-to)653-664
JournalPhysica Status Solidi A: Applied research
Volume61
Issue number2
DOIs
Publication statusPublished - 1980

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