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Jo, Wook
Sustainable Functional Ceramics Lab
Research Interests
  • Lead-free piezoceramics, ultra - low temperature sintering, ferroelectrics, relaxor ferroelectrics, 2D materials, magnetoelectric materials, multiferroics

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Temperature dependence of piezoelectric properties of high- TC Bi (Mg1/2Ti1/2) O3 - PbTiO3

Cited 37 times inthomson ciCited 18 times inthomson ci
Title
Temperature dependence of piezoelectric properties of high- TC Bi (Mg1/2Ti1/2) O3 - PbTiO3
Author
Chen, J.Jo, WookTan, X.Rodel, J.
Keywords
Depoling; Domain switchings; Electric cycling; Electric-field; High-T; Morphotropic phase boundaries; Oxygen octahedra; Piezoelectric property; Remanent polarization; Space Groups; Temperature dependence; Temperature dependent; Tetragonal phase; Tetragonality; Tolerance factor; X- Ray diffraction
Issue Date
2009
Publisher
AMER INST PHYSICS
Citation
JOURNAL OF APPLIED PHYSICS, v.106, no.3, pp. -
Abstract
The temperature dependence of both polarization and electric-field induced strain was investigated for (1-x)Bi(Mg1/2Ti1/2)O-3-xPbTiO(3) (x=0.36, 0.37, and 0.38), with the morphotropic phase boundary located at x=0.37. Remanent polarization (P-r) and maximum polarization (P-max) of all compositions are enhanced with increasing temperature up to 175 degrees C, which is rationalized as improved domain switching due to reduced tetragonality (c/a). The hysteresis during unipolar electric cycling tends to decrease with increase in the fraction of tetragonal phase. Temperature dependent x-ray diffraction demonstrates that switched non-180 degrees domains are stable against thermal depoling above 200 degrees C, which indicates that the currently investigated materials are suitable for high temperature applications. This promising high-T-C piezoelectric is further discussed with reference to oxygen octahedron of the tilted R3c and untilted R3m space groups and the tolerance factor (t).
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DOI
10.1063/1.3191666
ISSN
0021-8979
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MSE_Journal Papers
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