Preparation and Characterization of High Temperature Perovskite Ferroelectrics in the Solid-Solution (1-x)BiScO3–xPbTiO3

Eitel, Richard E.; Randall, Clive A.; Shrout, Thomas R.; Park, Seung Eek

doi:10.1143/jjap.41.2099

Cited by 518 publications

(380 citation statements)

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“…The most studied solid solutions ͓e.g., BiFeO 3 -PbTiO 3 , 16 BiScO 3 -PbTiO 3 , 17 and Pb͑Zn 1/3 Nb 2/3 ͒O 3 -PbTiO 3 ͑Ref. 18͔͒ are based on the same polarization rotation mechanism as in PZT.…”

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confidence: 99%

A morphotropic phase boundary system based on polarization rotation and polarization extension

Damjanović¹

2010

Applied Physics Letters

570

350

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Many ferroelectric solid solutions exhibit enhanced electromechanical properties at the morphotropic boundary separating two phases with different orientations of polarization. The mechanism of properties enhancement is associated with easy paths for polarization rotation in anisotropically flattened free energy profile. Another mechanism of properties enhancement related to free energy flattening is polarization extension. It is best known at temperature-driven ferroelectric-paraelectric phase transitions and may lead to exceedingly large properties. Its disadvantage is temperature instability of the enhancement. In this paper a temperature-composition phase diagram is proposed that exhibits compositionally driven-phase transitions with easy paths for both polarization rotation and polarization extension. © 2010 American Institute of Physics. ͓doi:10.1063/1.3479479͔The properties of materials that are defined by polarization change, such as dielectric permittivity and piezoelectric coefficients, may be enhanced in phase transition regions where there is a significant polarization variation. The examples are divergence of the dielectric and piezoelectric properties near points of temperature-, 1 ͑see Fig. 1͒, stress-, 2 electric field-, 3,4 and compositionally-driven 5,6 structural phase transitions. The compositionally induced structural change, the so-called morphotropic phase transition, 6,7 is of a great practical interest because the variable that drives the transition ͑i.e., composition͒ is inherent to the material and the transition point is maintained at operating conditions without an external influence ͑e.g., temperature, electric field, or stress͒. The morphotropic phase transition is the origin of large piezoelectric properties in Pb͑Zr 1−x Ti x ͒O 3 ͑PZT͒ solid solution, the most extensively used piezoelectric material. The enhancement of the properties in PZT occurs in the region of the composition-temperature phase diagram where crystal structure changes from tetragonal ͑T͒ to rhombohedral ͑R͒ via an intermediary monoclinic ͑M͒ phase as the Zr/Ti ratio becomes greater than ϳ52/ 48 ͑see Fig. 2͒. 8 This region is known as the morphotropic phase boundary ͑MPB͒. 6,7 Search for new piezoelectrics ͑for example, leadfree͒ is naturally focused on materials exhibiting a PZT-like MPB. In this paper the general concept of properties enhancement in the phase transition regions is used to propose a modified type of the phase diagram with compositionallydriven phase transitions.Ab initio and phenomenological calculations have shown that the intrinsic mechanism of the properties enhancement in phase transition regions is flattening of a free energy profile. 2,3,[9][10][11][12][13] This mechanism appears to be common to most phase transitions, whether compositionally-, stress-, electric field-, or temperature-driven. The anisotropy of the free energy profile determines easy paths for polarization change and corresponding properties enhancement. 11 Consider first a familiar example of the temperature-driven phase ...

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A morphotropic phase boundary system based on polarization rotation and polarization extension

Damjanović¹

2010

Applied Physics Letters

570

350

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“…This information is then used to infer characteristics about the asymmetric energetic landscape in a poled ferroelectric. This approach is demonstrated on the morphotropic phase boundary composition 0:36BiScO 3 À 0:64PbTiO 3 [18] which simultaneously exhibits a high room temperature piezoelectric coefficient (d 33 ¼ 460 pC=N) and a high Curie temperature (T c ¼ 450 C) [19].…”

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Deaging and Asymmetric Energy Landscapes in Electrically Biased Ferroelectrics

et al. 2012

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In ferroic materials, the dielectric, piezoelectric, magnetic, and elastic coefficients are significantly affected by the motion of domain walls. This motion can be described as the propagation of a wall across various types and strengths of pinning centers that collectively constitute a force profile or energetic landscape. Biased domain structures and asymmetric energy landscapes can be created through application of high fields (such as during electrical poling), and the material behavior in such states is often highly asymmetric. In some cases, this behavior can be considered as the electric analogue to the Bauschinger effect. The present Letter uses time-resolved, high-energy x-ray Bragg scattering to probe this asymmetry and the associated deaging effect in the ferroelectric morphotropic phase boundary composition 0:36BiScO 3 À 0:64PbTiO 3 .

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“…Керамика твердых растворов (1 − x)BiScO 3 · xPbTiO 3 (BS−PT) со структурой перовскита с составами близкими к морфотропной фазовой границе (МФГ) между их ромбоэдрической и тетрагональной фаза-ми (x = 0.64), характеризуется пьезомодулями d 33 ∼ ∼ 400 pC/N [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16], сопоставимыми по величине с пьезо-модулями цирконата-титаната свинца (ЦTС) -широко используемой пьезокерамики [17][18][19]. При этом точка Кюри керамики BS−PT (T c ∼ 720 K) превышает T c ЦТС на ∼ 100 K, что позволяет повысить температурный диапазон ее использования.…”

Section: Introductionunclassified

Сегнетоэлектрические релаксорные свойства образцов системы (1-2x)BiScO-=SUB=-3-=/SUB=-· xPbTiO-=SUB=-3-=/SUB=-· xPbMg-=SUB=-1/3-=/SUB=-Nb-=SUB=-2/3-=/SUB=-O-=SUB=-3-=/SUB=- (0.30≤ x≤0.46)

Bush¹,

Kamentsev²,

Bekhtin³

et al. 2017

Физика Твердого Тела

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На керамических образцах системы твердых растворов (1-2x)BiScO3· xPbTiO3· xPbMg1/3Nb2/3O3 (0.30≤ x≤0.46) со структурой перовскита выполнены рентгенографические, диэлектрические, пьезоэлектрические и пироэлектрические исследования. Найдено, что симметрия твердых растворов изменяется с ростом x от ромбоэдрической (x≤0.38) до тетрагональной (x≥0.42). Образцы с 0.30<x≤0.42 имеют характерные для сегнетоэлектриков-релаксоров свойства, проявляющиеся в наличии широкого пика на температурной зависимости диэлектрической проницаемости при Tmvarepsilon=390-440 K, положение которого смещается с частотой в сторону высоких температур, узких ненасыщенных петель диэлектрического гистерезиса, индуцированного электрическим полем перехода в сегнетоэлектрическое состояние при 318 K. Обнаруженные особенности диэлектрических, пьезо- и пироэлектрических свойств изученных твердых растворов объясняются принадлежностью их к сегнетоэлектрикам-релаксорам. Работа выполнена при поддержке Министерства образования и науки РФ (проект N 3.734.2014/К проектной части госзадания) и РФФИ (грант N 15-02-04647). DOI: 10.21883/FTT.2017.01.43947.431

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Preparation and Characterization of High Temperature Perovskite Ferroelectrics in the Solid-Solution (1-x)BiScO₃–xPbTiO₃

Cited by 518 publications

References 4 publications

A morphotropic phase boundary system based on polarization rotation and polarization extension

A morphotropic phase boundary system based on polarization rotation and polarization extension

Deaging and Asymmetric Energy Landscapes in Electrically Biased Ferroelectrics

Сегнетоэлектрические релаксорные свойства образцов системы (1-2x)BiScO-=SUB=-3-=/SUB=-· xPbTiO-=SUB=-3-=/SUB=-· xPbMg-=SUB=-1/3-=/SUB=-Nb-=SUB=-2/3-=/SUB=-O-=SUB=-3-=/SUB=- (0.30≤ x≤0.46)

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Preparation and Characterization of High Temperature Perovskite Ferroelectrics in the Solid-Solution (1-x)BiScO3–xPbTiO3

Cited by 518 publications

References 4 publications

A morphotropic phase boundary system based on polarization rotation and polarization extension

A morphotropic phase boundary system based on polarization rotation and polarization extension

Deaging and Asymmetric Energy Landscapes in Electrically Biased Ferroelectrics

Сегнетоэлектрические релаксорные свойства образцов системы (1-2x)BiScO-=SUB=-3-=/SUB=-&#183; xPbTiO-=SUB=-3-=/SUB=-&#183; xPbMg-=SUB=-1/3-=/SUB=-Nb-=SUB=-2/3-=/SUB=-O-=SUB=-3-=/SUB=- (0.30&le; x&le;0.46)

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Preparation and Characterization of High Temperature Perovskite Ferroelectrics in the Solid-Solution (1-x)BiScO₃–xPbTiO₃

Сегнетоэлектрические релаксорные свойства образцов системы (1-2x)BiScO-=SUB=-3-=/SUB=-· xPbTiO-=SUB=-3-=/SUB=-· xPbMg-=SUB=-1/3-=/SUB=-Nb-=SUB=-2/3-=/SUB=-O-=SUB=-3-=/SUB=- (0.30≤ x≤0.46)