High-pressure Brillouin scattering of Pb (Mg1/3 Nb2/3) O3

Muhtar Ahart; Maddury Somayazulu; Zuo Guang Ye; R. E. Cohen; Ho Kwang Mao; Russell J. Hemley

doi:10.1103/PhysRevB.79.132103

High-pressure Brillouin scattering of Pb (Mg1/3 Nb2/3) O3

Muhtar Ahart
, Maddury Somayazulu
, Zuo Guang Ye
, R. E. Cohen
, Ho Kwang Mao
, Russell J. Hemley

Carnegie Institution of Washington
Simon Fraser University

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

19 Scopus citations

Abstract

The pressure dependencies of the elastic constants and bulk modulus of single crystal Pb (Mg1/3 Nb2/3) O3 (PMN) have been measured up to 10 GPa at room temperature by Brillouin spectroscopy. The elastic moduli and elastic anisotropy undergo an abrupt change at 4.5 GPa, indicative of a phase transition and consistent with earlier Raman and x-ray diffraction studies. We suggest that PMN undergoes a structural change from a cubic Pm3m to rhombohedral R3c phase at 4.5 GPa.

Original language	English
Article number	132103
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	79
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.79.132103
State	Published - 1 Apr 2009
Externally published	Yes

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title = "High-pressure Brillouin scattering of Pb (Mg1/3 Nb2/3) O3",

abstract = "The pressure dependencies of the elastic constants and bulk modulus of single crystal Pb (Mg1/3 Nb2/3) O3 (PMN) have been measured up to 10 GPa at room temperature by Brillouin spectroscopy. The elastic moduli and elastic anisotropy undergo an abrupt change at 4.5 GPa, indicative of a phase transition and consistent with earlier Raman and x-ray diffraction studies. We suggest that PMN undergoes a structural change from a cubic Pm3m to rhombohedral R3c phase at 4.5 GPa.",

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doi = "10.1103/PhysRevB.79.132103",

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AU - Ahart, Muhtar

AU - Somayazulu, Maddury

AU - Ye, Zuo Guang

AU - Cohen, R. E.

AU - Mao, Ho Kwang

AU - Hemley, Russell J.

PY - 2009/4/1

Y1 - 2009/4/1

N2 - The pressure dependencies of the elastic constants and bulk modulus of single crystal Pb (Mg1/3 Nb2/3) O3 (PMN) have been measured up to 10 GPa at room temperature by Brillouin spectroscopy. The elastic moduli and elastic anisotropy undergo an abrupt change at 4.5 GPa, indicative of a phase transition and consistent with earlier Raman and x-ray diffraction studies. We suggest that PMN undergoes a structural change from a cubic Pm3m to rhombohedral R3c phase at 4.5 GPa.

AB - The pressure dependencies of the elastic constants and bulk modulus of single crystal Pb (Mg1/3 Nb2/3) O3 (PMN) have been measured up to 10 GPa at room temperature by Brillouin spectroscopy. The elastic moduli and elastic anisotropy undergo an abrupt change at 4.5 GPa, indicative of a phase transition and consistent with earlier Raman and x-ray diffraction studies. We suggest that PMN undergoes a structural change from a cubic Pm3m to rhombohedral R3c phase at 4.5 GPa.

UR - https://www.scopus.com/pages/publications/65649110802

U2 - 10.1103/PhysRevB.79.132103

DO - 10.1103/PhysRevB.79.132103

M3 - 文章

AN - SCOPUS:65649110802

SN - 1098-0121

VL - 79

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 13

M1 - 132103

ER -

High-pressure Brillouin scattering of Pb (Mg1/3 Nb2/3) O3

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