Journal ArticleDOI
Nanostructural-property relations in complex lead perovskites
Clive A. Randall,Amar S. Bhalla +1 more
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In this paper, a correlation between the nanoscale B-site order and relaxor on glassy ferroelectric behavior is found in these lead perovskites, and a hypothesis is suggested which relates 0-3 polar connectivity to order-disorder connectivity.Abstract:
From transmission electron microscopy studies on several complex lead perovskite compounds Pb(B'B'')O3, and their solid solutions a classification can be obtained based on B-cation order. This classification divides the complex lead perovskites into three subgroups; random occupation or disordered, nanoscale or short coherent long-range order and long coherent long-range order of B-site cations. A correlation between the nanoscale B-site order and relaxor on glassy ferroelectric behavior is found in these lead perovskites. An hypothesis is suggested which relates 0-3 polar connectivity to 0-3 order-disorder connectivity. This hypothesis is discussed with relation to present theories [G. A. Smolenskii: J. Phys. Soc. Jpn. (1970) Suppl., p. 26, L. E. Cross: Ferroelectrics 76 (1987) 241, T. L. Renieke and K. L. Ngai: Solid State Commun. 18 (1973) 1543] and reported experimental results of the perovskite relaxor ferroelectrics.read more
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Journal ArticleDOI
Domain configuration changes under electric field-induced antiferroelectric-ferroelectric phase transitions in NaNbO3-based ceramics
TL;DR: In this paper, the influence of chemical modification and electrical poling on the AFE/FE phase stability was investigated, primarily focusing on the microstructural and crystallographic evolutions.
Journal ArticleDOI
Effects of lead vacancies on the spontaneous relaxor to ferroelectric phase transition in Pb[(Mg1/3Nb2/3)0.9Ti0.1]O3
O. Bidault,E. Husson,A. Morell +2 more
TL;DR: In this paper, electrical measurements in different Pb[(Mg1/3Nb2/3)09Ti01]O3 ceramics exhibiting a spontaneous relaxor to ferroelectric transition were reported.
Journal ArticleDOI
Concentration-dependent short-range order in the relaxor ferroelectric (1-x)pb(sc,ta)o3-xpbtio3
Anatoly I. Frenkel,Douglas M. Pease,Jayne Giniewicz,Edward A. Stern,D. L. Brewe,D. L. Brewe,M. Daniel,J. I. Budnick +7 more
TL;DR: Using the x-ray diffraction and xray absorption fine structure techniques, Wang et al. as discussed by the authors have probed the local environments in the solid solution system and found that the displacement averaged over all regions becomes more weighted toward (001) as the value of $x$ increases.
Journal ArticleDOI
Effect of bismuth deficiency on structure and electrical properties of (Na0.5Bi0.5)0.93Ba0.07TiO3 ceramics
TL;DR: In this paper, the effect of Bi deficiency on the structure and electrical properties of (Na 0.5 Bi x ) 0.93 Ba 0.07 TiO 3 (x = 0.500-0.492) ceramics was investigated with respect to the amount of bi deficiency.
Journal ArticleDOI
Successive paraelectric‐antiferroelectric‐ferroelectric phase transitions in highly ordered perovskite lead ytterbium tantalate
Naohiko Yasuda,Junichi Konda +1 more
TL;DR: In this article, the dielectric properties of highly ordered perovskite Pb(Yb1/2Ta 1/2)O3 (PYT) compound were investigated.
References
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Incommensurate structures in highly ordered complex perovskites Pb(Co1/2W1/2)O3 and Pb(Sc1/2Ta1/2)O3.
TL;DR: Evidence for an incommensurate phase within the antiferroelectric and ferroelectric phase, respectively is revealed and a possible ``lock-in'' transition is found in Pb (${\mathrm{Sc}}_{1/2}$) and Pb (£3), but the incommonsurate to commensurate transition seems to be dependent on the degree of B-site order.
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