Comment on “Giant electromechanical coupling of relaxor ferroelectrics controlled by polar nanoregion vibrations” | Zendy

P. M. Gehring | Zendy; Zhijun Xu | Zendy; C. Stock | Zendy; Guangyong Xu | Zendy; D. Parshall | Zendy; Leland Harriger | Zendy; Clement Gehring | Zendy; Xiaobing Li | Zendy; Haosu Luo | Zendy

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Comment on “Giant electromechanical coupling of relaxor ferroelectrics controlled by polar nanoregion vibrations”

Author(s) -

P. M. Gehring,

Zhijun Xu,

C. Stock,

Guangyong Xu,

D. Parshall,

Leland Harriger,

Clement Gehring,

Xiaobing Li,

Haosu Luo

Publication year - 2019

Publication title -

science advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.928

H-Index - 146

ISSN - 2375-2548

DOI - 10.1126/sciadv.aar5066

Subject(s) - polar , phonon , condensed matter physics , ferroelectricity , lattice vibration , neutron scattering , wavelength , piezoelectricity , lattice (music) , materials science , transverse plane , coupling (piping) , neutron , physics , optoelectronics , quantum mechanics , acoustics , dielectric , biology , metallurgy , anatomy

Manley (, 16 September 2016, p. e1501814) report the splitting of a transverse acoustic phonon branch below in the relaxor ferroelectric Pb[(MgNb) Ti ]O with = 0.30 using neutron scattering methods. Manley argue that this splitting occurs because these phonons hybridize with local, harmonic lattice vibrations associated with polar nanoregions. We show that splitting is absent when the measurement is made using a different neutron wavelength, and we suggest an alternative interpretation.

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