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Coupled short-range ferroelectric and magnetic order in PbFe_{1/2}Nb_{1/2}O_{3} (2013)

C. Stock, S. R. Dunsiger, R. A. Mole, X. Li, and H. Luo

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2013-09-14

Description: Author(s): C. Stock, S. R. Dunsiger, R. A. Mole, X. Li, and H. Luo A neutron scattering investigation of the magnetoelectric coupling in PbFe 1/2 Nb 1/2 O 3 has been undertaken. Ferroelectric order occurs below 400 K, as evidenced by the softening with temperature and subsequent recovery of the zone center transverse optic phonon mode energy ( ℏ Ω 0 ). Over the same tempera... [Phys. Rev. B 88, 094105] Published Fri Sep 13, 2013

Keywords: Structure, structural phase transitions, mechanical properties, defects

Print ISSN: 1098-0121

Electronic ISSN: 1095-3795

Topics: Physics

Published by American Physical Society (APS)

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Freezing of the local dynamics in the relaxor ferroelectric [Pb(Zn_{1/3}Nb_{2/3})O_{3}]_{0.955}[PbTiO_{3}]_{0.045} (2012)

Zhijun Xu, Jinsheng Wen, E. Mamontov, C. Stock, P. M. Gehring, and Guangyong Xu

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2012-10-06

Description: Author(s): Zhijun Xu, Jinsheng Wen, E. Mamontov, C. Stock, P. M. Gehring, and Guangyong Xu We report measurements of the neutron diffuse scattering in a single crystal of the relaxor ferroelectric material 95.5%Pb(Zn 1/3 Nb 2/3 )O 3 -4.5%PbTiO 3 (PZN-4.5%PT). We show that the diffuse scattering at high temperatures has a quasielastic component with energy width ≳0.1 meV. On cooling the total dif... [Phys. Rev. B 86, 144106] Published Fri Oct 05, 2012

Keywords: Structure, structural phase transitions, mechanical properties, defects

Print ISSN: 1098-0121

Electronic ISSN: 1095-3795

Topics: Physics

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Evidence for anisotropic polar nanoregions in relaxor Pb(Mg_{1/3}Nb_{2/3})O_{3}: A neutron study of the elastic constants and anomalous TA phonon damping in PMN (2012)

C. Stock, P. M. Gehring, H. Hiraka, I. Swainson, Guangyong Xu, Z.-G. Ye, H. Luo, J.-F. Li, and D. Viehland

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2012-09-19

Description: Author(s): C. Stock, P. M. Gehring, H. Hiraka, I. Swainson, Guangyong Xu, Z.-G. Ye, H. Luo, J.-F. Li, and D. Viehland We use neutron inelastic scattering to characterize the acoustic phonons in the relaxor Pb(Mg 1/3 Nb 2/3 )O 3 (PMN) and demonstrate the presence of a highly anisotropic damping mechanism that is directly related to short-range polar correlations. For a large range of temperatures above T c ∼210 K, where d... [Phys. Rev. B 86, 104108] Published Tue Sep 18, 2012

Keywords: Structure, structural phase transitions, mechanical properties, defects

Print ISSN: 1098-0121

Electronic ISSN: 1095-3795

Topics: Physics

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