Investigation of the character of the phase transitions in Nb doped Zr-rich PZT by pyroelectric and dielectric measurements

Cereceda, N.; Noheda, Beatriz; Gonzalo, Julio A.

doi:10.1016/s0955-2219(98)00412-9

Cited by 21 publications

(7 citation statements)

References 9 publications

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“…2 In the F RL phase, the oxygen octahedron tilts along the [111] axis, which results in a bigger shift of the cationic displacement and an additional spontaneous polarization. 3,4 In the F RH phase, such tilt has not been observed. During the phase transition between F RL and F RH , the large change of spontaneous polarization resulting from the change of tilt leads to an intensive increase in the pyroelectric coefficient.…”

Section: Introductionmentioning

confidence: 93%

Microstructures and Pyroelectric Properties of Multicomposition 0.9PbZrO₃·xPbTiO₃·(0.1−x)Pb(Zn_1/3Nb_2/3)O₃ Ceramics

Uekawa

Sasaki

et al. 2002

Journal of the American Ceramic Society

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The microstructures and pyroelectric properties of multicomposition 0.9PbZrO3·xPbTiO3·(0.1−x)Pb(Zn1/3Nb2/3)O3 (PZ–PT–PZN) ceramics were investigated. The PZ–PT–PZN ceramics with nearly theoretical density were prepared by spark plasma sintering at low temperature (800°C) for a very short time (10 min) from two original compositions with x= 0.025 and x= 0.050. The heat treatment was successfully used to control the diffusion between the different compositions in such ceramics. For ceramics heat‐treated at 900°C, two pyroelectric peaks corresponding to the original compositions were observed. When the heat‐treatment temperature was increased to 1200°C, these two pyroelectric peaks combined into one sharp pyroelectric peak, which corresponds to average composition. When the spark‐plasma‐sintered ceramics were heat‐treated at 950°C, a high and stable pyroelectric coefficient (>100 nC·cm−2·K−1) over a wide temperature range (23°–47°C) was obtained. It was found that the pyroelectric properties strongly depended on the microstructures.

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Section: Introductionmentioning

confidence: 93%

Microstructures and Pyroelectric Properties of Multicomposition 0.9PbZrO₃·xPbTiO₃·(0.1−x)Pb(Zn_1/3Nb_2/3)O₃ Ceramics

Uekawa

Sasaki

et al. 2002

Journal of the American Ceramic Society

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“…Among them contributions of the processing ceramic powders in ethanol solution by power ultrasonic wave in aide of cavitation ef- We have used the highly automatized TESTER RLC HIOKI 3532 determine imagine part ϵ ′′ of dielectric constant at room temperature and 1 KHz. The electric conductivities σ have been calculated using formula [2]:…”

Section: Effect Of Ta 5+ Concentrations On Ceramic Densitymentioning

confidence: 99%

“…Pb(Zr,Ti)O 3 (PZT) ceramics has been very important ferroelectric materials because of excellent ferroelectric properties, strong piezoelectric, pyroelectric effects, electro-optical properties. In recent years, there are many published papers [2][3][4][5][6][7][8] pointing out that in the Zr-and Ti-rich of PZT compositions exist not only good ferroelectric, piezoelectric effects, but also very strong pyroelectric effect. In the paper authors would like to present new experimental results of PZT 82.5/17.5-x mol% Cr 2 O 3 system, where x = 0, 0.5, 0.75, 1, 1.25, 1.50, and 2 mol% and PZT 82.5/17.5-y mol% Ta 2 O 5 , where y = 0, 0.5, 1, 1.50, and 2 mol%.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cr3+ and Ta5+ Concentrations on Structure, Microstructure, Electric, Dielectric, Ferroelectric and Pyroelectric Properties of the Pb(Zr0.825Ti0.175)O3 Ceramic System

Tuan

Dan

2012

e-J. Surf. Sci. Nanotechnol.

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In the paper we would like to present experimental research results of effect of Cr 3+ and Ta 5+ concentration on structure, microstructure, electric, dielectric, ferroelectric and pyroelectric properties of the ceramic Pb(Zr0.825Ti0.175)O3-x mol% Cr2O3 and the ceramic Pb(Zr0.825Ti0.175)O3-y mol% Ta2O5, where x = 0, 0.5, 0.75, 1, 1.25, 1.50, and 2 mol% and y = 0, 0.5, 1, 1.50, and 2 mol%. Experimental results indicated that Cr 3+ and Ta 5+ concentrations are of great effect on mentioned above physical properties. Research results of X-ray diffraction diagrams indicated that exist pure perovskite phases with rhombohedral structure in all of ceramic compositions of the systems. From SEM images we can see that rhombohedral grains of 2 µm size closely distributed with small pores. Ceramic densities, dielectric constants, dielectric loss factor are presented with respective values: ρ = 7.48 g/cm 3 , ϵ/ϵ0 = 343, tan δ= 0.03 for the optimal Cr2O3 concentration of 1.25 mol%. Besides, ceramic densities, dielectric constants, dielectric loss factor are presented with respective values: ρ = 7.51 g/cm 3 , ϵ/ϵ0 = 307, tan δ= 0.02 for the optimal Ta2O5 concentration of 1 mol%. Cr 3+ and Ta 5+ concentrations are of very strong effect on structure, microstructure and electric property of the studied systems. Hysteresis loops are of typical rectangular form characterizing ferroelectric materials. Pyroelectric effects are very strong in all compositions of the studied system with maximal pyroelectric coefficients γmax = (0.78-7.72)×10 −2 µC/cm 2 K (for x mol% Cr2O3), γmax = (1.5-24.8)×10 −2 µC/cm 2 K (for y mol% Ta2O5), pyroelectric coefficients at room temperature (306 K) γroom = (0.15-0.96)×10 −3 µC/cm 2 K (for x mol% Cr2O3), γroom = (0.05-4.38)×10 −3 µC/cm 2 K (for y mol% Ta2O5).

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“…In recent years, have been many published papers [2][3][4][5][6][7][8][9] pointing out that in the Zr-and Ti-rich of PZT compositions there are not only good ferroelectric, piezoelectric effects, but also very strong pyroelectric effect. In this paper author would to present new experimental results of Pb(Zr 0.825 Ti 0.175 )O 3 -xCr 2 O 3 , where x = 0; 0.50; 0.75; 1.00; 1.25; 1.50; 2.00 % mol. Effects of Cr 3+ concentrations on structure, microstructure, electric, dielectric, ferroelectric, pyroelectric properties and improvement of technology have been presented and discussed.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Study of effect of Cr3 concentration on Physical properties and pyroelectric property of the Pb Zr0 825Ti0 175 O3 ceramic system

Nguyen¹

2016

Sixth International Conference on Advances in Applied Science and Environmental Engineering - ASEE 2016

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Investigation of the character of the phase transitions in Nb doped Zr-rich PZT by pyroelectric and dielectric measurements

Cited by 21 publications

References 9 publications

Microstructures and Pyroelectric Properties of Multicomposition 0.9PbZrO₃·xPbTiO₃·(0.1−x)Pb(Zn_1/3Nb_2/3)O₃ Ceramics

Microstructures and Pyroelectric Properties of Multicomposition 0.9PbZrO₃·xPbTiO₃·(0.1−x)Pb(Zn_1/3Nb_2/3)O₃ Ceramics

Effect of Cr<sup>3+</sup> and Ta<sup>5+</sup> Concentrations on Structure, Microstructure, Electric, Dielectric, Ferroelectric and Pyroelectric Properties of the Pb(Zr<sub>0.825</sub>Ti<sub>0.175</sub>)O<sub>3</sub> Ceramic System

Synthesis and Study of effect of Cr3 concentration on Physical properties and pyroelectric property of the Pb Zr0 825Ti0 175 O3 ceramic system

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Investigation of the character of the phase transitions in Nb doped Zr-rich PZT by pyroelectric and dielectric measurements

Cited by 21 publications

References 9 publications

Microstructures and Pyroelectric Properties of Multicomposition 0.9PbZrO3·xPbTiO3·(0.1−x)Pb(Zn1/3Nb2/3)O3 Ceramics

Microstructures and Pyroelectric Properties of Multicomposition 0.9PbZrO3·xPbTiO3·(0.1−x)Pb(Zn1/3Nb2/3)O3 Ceramics

Effect of Cr<sup>3+</sup> and Ta<sup>5+</sup> Concentrations on Structure, Microstructure, Electric, Dielectric, Ferroelectric and Pyroelectric Properties of the Pb(Zr<sub>0.825</sub>Ti<sub>0.175</sub>)O<sub>3</sub> Ceramic System

Synthesis and Study of effect of Cr3 concentration on Physical properties and pyroelectric property of the Pb Zr0 825Ti0 175 O3 ceramic system

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Microstructures and Pyroelectric Properties of Multicomposition 0.9PbZrO₃·xPbTiO₃·(0.1−x)Pb(Zn_1/3Nb_2/3)O₃ Ceramics

Microstructures and Pyroelectric Properties of Multicomposition 0.9PbZrO₃·xPbTiO₃·(0.1−x)Pb(Zn_1/3Nb_2/3)O₃ Ceramics