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Title: Tensile stress induced depolarization in [001]-poled transverse mode Pb(Zn1/3Nb2/3)O3 -(6-7)%PbTiO3 single crystals
Authors: Shukla, R.
Lim, L.-C. 
Gandhi, P.
Issue Date: 1-Apr-2011
Citation: Shukla, R., Lim, L.-C., Gandhi, P. (2011-04-01). Tensile stress induced depolarization in [001]-poled transverse mode Pb(Zn1/3Nb2/3)O3 -(6-7)%PbTiO3 single crystals. Journal of Applied Physics 109 (7) : -. ScholarBank@NUS Repository.
Abstract: This paper investigates the effects of electrically induced and direct tensile stress on the deformation and dielectric properties of Pb(Zn 1/3Nb2/3)O3-(6-7)%PbTiO3 single crystals of [110]L × [001]T cut by using a unimorph sample and a four-point-bend (FPB) sample, respectively. The results show a dip in tip displacement for the unimorph sample at sufficiently high electric field parallel to the poling field direction and a sudden rise in capacitance for the FPB sample at sufficiently high tensile stress in the [110] crystal direction, respectively. These phenomena are attributed to the tensile stress induced rhombohedral-to-orthorhombic phase transition and associated depolarization events in the crystal. For the said crystal cut, the obtained tensile depoling stress is in the range of 15-20 MPa. The present work furthermore shows that the occurrence of tensile stress-induced depolarization is possible even when the direction of the applied electric field is parallel to the poling field direction, as in the unimorph sample examined. © 2011 American Institute of Physics.
Source Title: Journal of Applied Physics
ISSN: 00218979
DOI: 10.1063/1.3552587
Appears in Collections:Staff Publications

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