%0 Journal Article
%T Role of Zinc and Niobium in the Giant Piezoelectric Response of PbZn1/3Nb2/3O3
%+ Laboratoire Charles Coulomb (L2C)
%+ Laboratoire Structures, Propriétés et Modélisation des solides (SPMS)
%+ Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM)
%+ European Synchrotron Radiation Facility (ESRF)
%A Al-Zein, Ali
%A Dammak, Hichem
%A Papet, Philippe
%A Mathon, Olivier
%A Hehlen, Bernard
%A Levelut, Claire
%A Haines, Julien
%A Rouquette, Jerome
%< avec comité de lecture
%@ 0020-1669
%J Inorganic Chemistry
%I American Chemical Society
%V 53
%N 8
%P 3985
%8 2014-04-21
%D 2014
%Z 1412.3536
%R 10.1021/ic402409f
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Journal articles
%X Relaxor ferroelectric perovskites are highly polarizable and can exhibit giant coupling between elastic strain and an applied electric field. Here, we report an in situ extended X-ray absorption fine structure (EXAFS) study of a PbZn1/3Nb2/3O3 (PZN) single crystal as a function of the electric field. We show that the strong dipoles in the NbO6 octahedra bonds are aligned along the four < 011 > directions close to the orientation of the electric field, while a small reversible polar shift occurs for Zn in the direction of the electric field, i.e., positive or negative. This reversible Zn-O polar shift is proposed to play an important role in both the "easy" switching of the ferroelectric polarization and the giant piezoelectric effect in PZN.
%G English
%2 https://hal.science/hal-01084087/document
%2 https://hal.science/hal-01084087/file/PZN_InorganicChemistry-revised_jh.pdf
%L hal-01084087
%U https://hal.science/hal-01084087
%~ EC-PARIS
%~ CNRS
%~ UNIV-MONTP1
%~ UNIV-MONTP2
%~ ENSC-MONTPELLIER
%~ SPMS
%~ ICG
%~ L2C
%~ SPMS-AXE3
%~ INC-CNRS
%~ MIPS
%~ CHIMIE
%~ UNIV-MONTPELLIER
%~ GS-PHYSIQUE
%~ UM1-UM2
%~ UM-2015-2021
%~ TEST2-HALCNRS