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Phase Diagram for the 0.4Pb(Ni 1/3 ,Nb 1/3 )O 3 –0.6Pb(Zr,Ti)O 3 Solid Solution in the Vicinity of a Morphotropic Phase Boundary
Author(s) -
Robert Gilles,
Demartin Marlyse,
Damjanovic Dragan
Publication year - 1998
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1998.tb02404.x
Subject(s) - phase boundary , phase diagram , solid solution , materials science , ferroelectricity , dielectric , permittivity , phase (matter) , phase transition , condensed matter physics , analytical chemistry (journal) , mineralogy , chemistry , physics , metallurgy , optoelectronics , organic chemistry , chromatography
A phase diagram based on dielectric‐permittivity‐versus‐temperature measurements and high‐temperature X‐ray diffractometry was proposed for 0.4Pb(Ni 1/3 ,Nb 1/3 )O 3 ‐ x PbZrO 3 ‐(0.6‐ x )PbTiO 3 (0.2 lessthan equal to x lessthan equal to 0.32) relaxor‐ferroelectric solid solution, and a morphotropic phase boundary that sharply bends toward zirconium‐rich compositions was found. A spontaneous normal‐to‐relaxor ferroelectric transition was also observed when heating was performed for all the compositions tested near the morphotropic phase boundary. Additional considerations about previously published phase diagrams for Pb(Zn 1/3 ,Nb 2/3 )O 3 ‐PbTiO 3 and Pb(Mg 1/3 ,Nb 1/3 )O 3 ‐PbTiO 3 might lead to an extension of the presented diagram to these compositions.