TY - JOUR
T1 - The influence of the external stress on the electromechanical response of electrostrictive 0.9Pb(Mg1/3Nb2/3)O3-0-1PbTiO3 in the dc electrical field-biased state
AU - Zhao, J.
AU - Mueller, Volkmar
AU - Zhang, Q. M.
N1 - Funding Information:
This work was supported by the Office of Naval Research.
PY - 1999/3
Y1 - 1999/3
N2 - The influence of uniaxial compressive stress, T3, applied parallel to the electrical field, on the electromechanical parameters of 0.9Pb(Mg1/3Nb2/3)O3-0.1PbTiO3 ceramics in the dc electrical field-biased state and at temperatures near the dielectric constant maximum Tm was investigated. It was found that T3 reduces both the dielectric constant and polarization level, which results in a reduction of the piezoelectric coefficient with stress. However, the compliance of the material does not show much change with stress. As a consequence, the coupling factor k33 is also reduced with stress. On the other hand, the existence of the local micropolar region in the material causes anomalous changes in the aforementioned properties when the material is subjected to a high electric field, which induces a macropolar state. The transformation of this macropolar state back to a micropolar state under stress involves a large volume strain and results in an enhancement of the hydrostatic piezoelectric response.
AB - The influence of uniaxial compressive stress, T3, applied parallel to the electrical field, on the electromechanical parameters of 0.9Pb(Mg1/3Nb2/3)O3-0.1PbTiO3 ceramics in the dc electrical field-biased state and at temperatures near the dielectric constant maximum Tm was investigated. It was found that T3 reduces both the dielectric constant and polarization level, which results in a reduction of the piezoelectric coefficient with stress. However, the compliance of the material does not show much change with stress. As a consequence, the coupling factor k33 is also reduced with stress. On the other hand, the existence of the local micropolar region in the material causes anomalous changes in the aforementioned properties when the material is subjected to a high electric field, which induces a macropolar state. The transformation of this macropolar state back to a micropolar state under stress involves a large volume strain and results in an enhancement of the hydrostatic piezoelectric response.
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U2 - 10.1557/JMR.1999.0126
DO - 10.1557/JMR.1999.0126
M3 - Article
AN - SCOPUS:0033099045
SN - 0884-2914
VL - 14
SP - 948
EP - 956
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 3
ER -