Acoustic emission and thermal expansion of Pb(Mg1/3Nb2/3)O3 and Pb(Mg1/3Nb2/3)O3-PbTiO3 crystals

E. Dul'kin; I. P. Raevskiǐ; S. M. Emel'yanov

doi:10.1134/1.1537428

Acoustic emission and thermal expansion of Pb(Mg_1/3Nb_2/3)O₃ and Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ crystals

E. Dul'kin^*, I. P. Raevskiǐ, S. M. Emel'yanov

^*Corresponding author for this work

Department of Applied Physics

Research output: Contribution to journal › Article › peer-review

42 Scopus citations

Abstract

The temperature dependence of the elongation per unit length for Pb(Mg_1/3Nb_2/3)O₃ crystals unannealed after growth and mechanical treatment is investigated in the course of thermocycling. It is revealed that this dependence deviates from linear behavior at temperatures below 350°C. The observed deviation is characteristic of relaxors, is very small in the first cycle, increases with increasing number n of thermocycles, and reaches saturation at n ≥ 3. In the first cycle, a narrow maximum of the acoustic emission activity is observed in the vicinity of 350°C. In the course of thermocycling, the intensity of this maximum decreases and becomes zero at n > 3. For (1 - x)Pb(Mg_1/3Nb_2/3)O₃-xPbTiO₃ crystals, the dependence of the temperature of this acoustic emission maximum on x exhibits a minimum. It is assumed that the phenomena observed are associated with the phase strain hardening due to local phase transitions occurring in compositionally ordered and polar nanoregions.

Original language	English
Pages (from-to)	158-162
Number of pages	5
Journal	Physics of the Solid State
Volume	45
Issue number	1
DOIs	https://doi.org/10.1134/1.1537428
State	Published - 1 Jan 2003

Bibliographical note

Funding Information:
ACKNOWLEDGMENTS This work was supported in part by the Russian Foundation for Basic Research (project no. 01-03-33119) and the Ministry of Education of the Russian Federation (project no. E00-3.4-287)

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title = "Acoustic emission and thermal expansion of Pb(Mg1/3Nb2/3)O3 and Pb(Mg1/3Nb2/3)O3-PbTiO3 crystals",

abstract = "The temperature dependence of the elongation per unit length for Pb(Mg1/3Nb2/3)O3 crystals unannealed after growth and mechanical treatment is investigated in the course of thermocycling. It is revealed that this dependence deviates from linear behavior at temperatures below 350°C. The observed deviation is characteristic of relaxors, is very small in the first cycle, increases with increasing number n of thermocycles, and reaches saturation at n ≥ 3. In the first cycle, a narrow maximum of the acoustic emission activity is observed in the vicinity of 350°C. In the course of thermocycling, the intensity of this maximum decreases and becomes zero at n > 3. For (1 - x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 crystals, the dependence of the temperature of this acoustic emission maximum on x exhibits a minimum. It is assumed that the phenomena observed are associated with the phase strain hardening due to local phase transitions occurring in compositionally ordered and polar nanoregions.",

author = "E. Dul'kin and Raevskiǐ, {I. P.} and Emel'yanov, {S. M.}",

note = "Funding Information: ACKNOWLEDGMENTS This work was supported in part by the Russian Foundation for Basic Research (project no. 01-03-33119) and the Ministry of Education of the Russian Federation (project no. E00-3.4-287)",

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AU - Emel'yanov, S. M.

N1 - Funding Information: ACKNOWLEDGMENTS This work was supported in part by the Russian Foundation for Basic Research (project no. 01-03-33119) and the Ministry of Education of the Russian Federation (project no. E00-3.4-287)

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N2 - The temperature dependence of the elongation per unit length for Pb(Mg1/3Nb2/3)O3 crystals unannealed after growth and mechanical treatment is investigated in the course of thermocycling. It is revealed that this dependence deviates from linear behavior at temperatures below 350°C. The observed deviation is characteristic of relaxors, is very small in the first cycle, increases with increasing number n of thermocycles, and reaches saturation at n ≥ 3. In the first cycle, a narrow maximum of the acoustic emission activity is observed in the vicinity of 350°C. In the course of thermocycling, the intensity of this maximum decreases and becomes zero at n > 3. For (1 - x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 crystals, the dependence of the temperature of this acoustic emission maximum on x exhibits a minimum. It is assumed that the phenomena observed are associated with the phase strain hardening due to local phase transitions occurring in compositionally ordered and polar nanoregions.

AB - The temperature dependence of the elongation per unit length for Pb(Mg1/3Nb2/3)O3 crystals unannealed after growth and mechanical treatment is investigated in the course of thermocycling. It is revealed that this dependence deviates from linear behavior at temperatures below 350°C. The observed deviation is characteristic of relaxors, is very small in the first cycle, increases with increasing number n of thermocycles, and reaches saturation at n ≥ 3. In the first cycle, a narrow maximum of the acoustic emission activity is observed in the vicinity of 350°C. In the course of thermocycling, the intensity of this maximum decreases and becomes zero at n > 3. For (1 - x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 crystals, the dependence of the temperature of this acoustic emission maximum on x exhibits a minimum. It is assumed that the phenomena observed are associated with the phase strain hardening due to local phase transitions occurring in compositionally ordered and polar nanoregions.

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Acoustic emission and thermal expansion of Pb(Mg_1/3Nb_2/3)O₃ and Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ crystals

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