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

P M Gehring, Zhijun Xu, Christopher Stock, Guangyong Xu, D Parshall, L Harriger, C A Gehring, Xiaobing Li, Haosu Luo

Research output: Contribution to journalArticlepeer-review

Abstract

Manley et al. (Science Advances, 16 September 2016, p. e1501814) report the splitting of a transverse acoustic phonon branch below TC in the relaxor ferroelectric Pb[(Mg1/3Nb2/3)1-xTix]O3 with x = 0.30 using neutron scattering methods. Manley et al. argue that this occurs because these phonons hybridize with local, harmonic lattice vibrations associated with polar nanoregions. We show that this splitting is absent when the measurement is made using a different neutron wavelength. It is therefore spurious.
Original languageEnglish
JournalScience Advances
DOIs
Publication statusPublished - 22 Mar 2019

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