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Zr‐Modified Pb(Mg 1/3 Nb 2/3 )O 3 with a Long‐Range Cation Order
Author(s) -
Zhao Xiaohui,
Qu Weiguo,
Tan Xiaoli
Publication year - 2008
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.1551-2916.2008.02552.x
Subject(s) - crystallography , transmission electron microscopy , materials science , short range order , order (exchange) , x ray crystallography , ceramic , diffraction , ferroelectricity , analytical chemistry (journal) , mineralogy , chemistry , nanotechnology , physics , metallurgy , dielectric , optoelectronics , finance , chromatography , optics , economics
The 1:1 structural order and B‐site cation order in Pb(Mg 1/3 Nb 2/3 )O 3 ceramics was significantly enhanced by Zr 4+ substituting Nb 5+ according to the chemical formula Pb(Mg 1/3 Zr 2 x /3 Nb 2(1− x )/3 )O 3− x /3 . The enhanced structural and cation order was revealed by both X‐ray diffraction and transmission electron microscopy. The increased charge difference and the introduced oxygen vacancies were suggested to account for the observed long‐range cation order. Typical relaxor ferroelectric behavior was retained even in the ceramics with a high degree of cation order.