TITLE

Piezoelectric properties and phase transitions of <001>-oriented Pb(Zn[sub 1/3]Nb[sub 2/3])O[sub 3]–PbTiO[sub 3] single crystals

AUTHOR(S)
Ren, W.; Liu, S-F.; Mukherjee, B. K.
PUB. DATE
April 2002
SOURCE
Applied Physics Letters;4/29/2002, Vol. 80 Issue 17, p3174
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Electric-field-induced phase transitions and piezoelectric properties of <001>-oriented Pb(Zn[sub 1/3]Nb[sub 2/3])O[sub 3]–xPbTiO[sub 3] single crystals for x=4.5% and 8% (PZN–4.5%PT and PZN–8%PT) have been investigated as a function of temperature. It was found that the piezoelectric properties and phase transitions for both crystals are strongly dependent on temperature. The measurements of polarization and strain as a function of unipolar electric field show that the field for the rhombohedral–tetragonal phase transition decreases linearly with temperature in the range between 25 and 105 °C. Thus, raising the temperature can stabilize the tetragonal phase in <001>-oriented PZN–PT crystals. Longitudinal piezoelectric constant d[sub 33] in the rhombohedral phase increases with temperature for both crystals; in PZN–4.5%PT the slope itself increases significantly at temperatures over 60 °C. In the field-induced tetragonal phase, there is little change in d[sub 33] for PZN–8%PT within the temperature range investigated, while in PZN–4.5%PT a slight increase of d[sub 33] with temperature was observed at temperatures above 80 °C. © 2002 American Institute of Physics.
ACCESSION #
6540259

 

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