Journal ArticleDOI
Nanostructural-property relations in complex lead perovskites
Clive A. Randall,Amar S. Bhalla +1 more
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TLDR
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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Relationship between B-site order and properties in Pb(B'B″)O3 perovskites
TL;DR: In this paper, a simple classification scheme was presented which essentially relates the scale of B-site cation order in complex lead based perovskites Pb(B′B″)O3 with either normal ferroelectric (antiferroelectric) or relaxor Ferroelectric behavior, as observed in these materials.
Journal ArticleDOI
Relationship between B-site order and properties in Pb(B′B″)O3 perovskites
TL;DR: In this article, a simple classification scheme was presented which essentially relates the scale of B-site cation order in complex lead based perovskites Pb(B′B″)O3 with either normal ferroelectric (antiferroelectric) or relaxor Ferroelectric behavior, as observed in these materials.
Journal ArticleDOI
Effect of Mn-doping on dielectric relaxation behavior of Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 ferroelectric ceramics
TL;DR: In this paper, the phase transition characteristics, dielectric relaxation behavior, and ferroelectric hysteresis in undoped and Mn-doped 0.24Pb(In 1/2Nb1/2)O3-0.34PbTiO3 (24PIN-42PMN-34PT) ternary ceramics were investigated.
Journal ArticleDOI
B-site disordering in Pb(Sc1/2Ta1/2)O3 by mechanical activation
TL;DR: In this article, B-site disorder in Pb(Sc 1/2Ta1/2)O3 (PST) is reported to be triggered by mechanical activation (MA), and the resulting ferroelectric behaviors thus derived MA induces Bsite order-disorder transformation in PST.
Journal ArticleDOI
Structure and electrical properties of Bi0.5Na0.5TiO3–Bi0.5K0.5TiO3–BiCoO3 lead-free piezoelectric ceramics
TL;DR: In this paper, a lead-free piezoelectric ceramics (1−−x−−y)Bi0.5TiO3-yBiCoO3 (x = 0.12-0.24, y = 0 to 0.04) have been fabricated by a conventional solidstate reaction method, and their structure and electrical properties have been investigated.
References
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Journal ArticleDOI
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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The Role of B-Site Cation Disorder in Diffuse Phase-Transition Behavior of Perovskite Ferroelectrics
Nava Setter,L. E. Cross +1 more