期刊
JOURNAL OF PHYSICS-CONDENSED MATTER
卷 25, 期 36, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/25/36/362203
关键词
-
资金
- Department of Science and Technology, Govt of India
- Council of Scientific and Industrial Research (CSIR)
The lead-free Ba (Ti1-xZrx)O-3 ceramic has shown enhanced piezo-response (d(33)) in a narrow composition interval (0.01 <= x <= 0.03) exhibiting the coexistence of two ferroelectric phases. The system presents two electric-field-dependent-property regimes: (i) a low field regime (E < 1.7 kV mm(-1)) where d(33) is nearly independent of the poling field, and (ii) (E > 1.7 kV mm(-1)) for which d(33) drops sharply. X-ray diffraction studies revealed that the later phenomenon is related to field driven irreversible structural transformation, which tends to drive the system away from an equilibrium two phase state to a nearly single phase metastable state.
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