Tensile stress induced depolarization in [001]-poled transverse mode Pb(Zn{sub 1/3}Nb{sub 2/3})O{sub 3} -(6-7)%PbTiO{sub 3} single crystals

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3552587· OSTI ID:21538227

Shukla, Rahul ^[1]; Lim, Leong-Chew ^[2]; Gandhi, Prasanna ^[1]

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1. Suman Mashruwala Advanced Microengineering Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Bombay, Mumbai 400076 (India)
2. Department of Mechanical Engineering, National University of Singapore, Singapore 119260 (Singapore)

This paper investigates the effects of electrically induced and direct tensile stress on the deformation and dielectric properties of Pb(Zn{sub 1/3}Nb{sub 2/3})O{sub 3}-(6-7)%PbTiO{sub 3} single crystals of [110]{sup L}x[001]{sup 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.

• OSTI ID: 21538227
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 7; Other Information: DOI: 10.1063/1.3552587; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
DEFORMATION
DEPOLARIZATION
DIELECTRIC PROPERTIES
ELECTRIC FIELDS
FERROELECTRIC MATERIALS
LEAD COMPOUNDS
MONOCRYSTALS
NIOBIUM COMPOUNDS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PIEZOELECTRICITY
POLARIZATION
STRESSES
TITANATES
TRIGONAL LATTICES
ZINC COMPOUNDS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
DIELECTRIC MATERIALS
ELECTRICAL PROPERTIES
ELECTRICITY
MATERIALS
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS