Effect of high pressure on the relaxor ferroelectrics Na 1/2Bi1/2TiO3 (NBT) and PbMg 1/3Nb2/3O3 (PMN)

J. Kreisel; P. Bouvier; B. Dkhil; B. Chaabane; A. M. Glazer; P. A. Thomas; T. R. Welberry

doi:10.1080/00150190490455269

Effect of high pressure on the relaxor ferroelectrics Na _1/2Bi_1/2TiO₃ (NBT) and PbMg _1/3Nb_2/3O₃ (PMN)

J. Kreisel^*, P. Bouvier, B. Dkhil, B. Chaabane, A. M. Glazer, P. A. Thomas, T. R. Welberry

^*Corresponding author for this work

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

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Abstract

The aim of the present paper is to review and briefly discuss recent experimental results on the effect of high pressure (p > 1.5 GPa) on relaxor ferroelectrics, exemplified by Na1/2Bi1/2TiO3 and PbMg1/3Nb2/3O3. The main result is that relaxor ferroelectrics present important polar and structural pressure-instabilities, which lead to both phase transitions of the average structure and considerable changes of the local structure. It is in particular the observation of a pressure-induced suppression of the relaxor-characteristic X-ray diffuse scattering that points to important changes in the local order. The complementary use of Raman spectroscopy, X-ray diffraction and X-ray diffuse scattering allows the proposition of a mechanism for the observed changes.

Original language	English
Pages (from-to)	293-298
Number of pages	6
Journal	Ferroelectrics
Volume	302
DOIs	https://doi.org/10.1080/00150190490455269
Publication status	Published - 1 Jan 2004

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10.1080/00150190490455269

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title = "Effect of high pressure on the relaxor ferroelectrics Na 1/2Bi1/2TiO3 (NBT) and PbMg 1/3Nb2/3O3 (PMN)",

abstract = "The aim of the present paper is to review and briefly discuss recent experimental results on the effect of high pressure (p > 1.5 GPa) on relaxor ferroelectrics, exemplified by Na1/2Bi1/2TiO3 and PbMg1/3Nb2/3O3. The main result is that relaxor ferroelectrics present important polar and structural pressure-instabilities, which lead to both phase transitions of the average structure and considerable changes of the local structure. It is in particular the observation of a pressure-induced suppression of the relaxor-characteristic X-ray diffuse scattering that points to important changes in the local order. The complementary use of Raman spectroscopy, X-ray diffraction and X-ray diffuse scattering allows the proposition of a mechanism for the observed changes.",

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TY - JOUR

T1 - Effect of high pressure on the relaxor ferroelectrics Na 1/2Bi1/2TiO3 (NBT) and PbMg 1/3Nb2/3O3 (PMN)

AU - Kreisel, J.

AU - Bouvier, P.

AU - Dkhil, B.

AU - Chaabane, B.

AU - Glazer, A. M.

AU - Thomas, P. A.

AU - Welberry, T. R.

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Y1 - 2004/1/1

N2 - The aim of the present paper is to review and briefly discuss recent experimental results on the effect of high pressure (p > 1.5 GPa) on relaxor ferroelectrics, exemplified by Na1/2Bi1/2TiO3 and PbMg1/3Nb2/3O3. The main result is that relaxor ferroelectrics present important polar and structural pressure-instabilities, which lead to both phase transitions of the average structure and considerable changes of the local structure. It is in particular the observation of a pressure-induced suppression of the relaxor-characteristic X-ray diffuse scattering that points to important changes in the local order. The complementary use of Raman spectroscopy, X-ray diffraction and X-ray diffuse scattering allows the proposition of a mechanism for the observed changes.

AB - The aim of the present paper is to review and briefly discuss recent experimental results on the effect of high pressure (p > 1.5 GPa) on relaxor ferroelectrics, exemplified by Na1/2Bi1/2TiO3 and PbMg1/3Nb2/3O3. The main result is that relaxor ferroelectrics present important polar and structural pressure-instabilities, which lead to both phase transitions of the average structure and considerable changes of the local structure. It is in particular the observation of a pressure-induced suppression of the relaxor-characteristic X-ray diffuse scattering that points to important changes in the local order. The complementary use of Raman spectroscopy, X-ray diffraction and X-ray diffuse scattering allows the proposition of a mechanism for the observed changes.

KW - NBT

KW - PMN

KW - Pressure

KW - Relaxor

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ER -

Effect of high pressure on the relaxor ferroelectrics Na _1/2Bi_1/2TiO₃ (NBT) and PbMg _1/3Nb_2/3O₃ (PMN)

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