Polarization reversal and electrocaloric measurements for field-enforced transitions in the system lead zirconate-lead titanate-lead oxide: tin oxide
The Pb(Zr, Sn, Ti)O/sub 3/ crystalline solution series (PZST) has several phases of near equal free energy, allowing field-enforceable antiferroelectric (AFE) to ferroelectric (FE) and paraelectric (PE) to ferroelectric (FE) transitions. An understanding of the stability of FE, AFE, and PE phases with respect to chemical composition, electric field and temperature was developed from low frequency polarization vs electric field measurements at different temperatures. All materials studied had a sequence of phase transitions FE-AFE-PE with increasing temperature. The temperature range of AFE phase stability increased with increasing Zr/Ti ratio, while SnO/sub 2/ content increased the stability over a wider compositional range. Thus, through compositional modification, some materials were fabricated that had an AFE temperature range of stability of only 3/sup 0/C, while for others the temperature range of AFE phase stability was in excess of 100/sup 0/C.
- Research Organization:
- Illinois Univ., Urbana (USA)
- DOE Contract Number:
- AC02-78ER04679
- OSTI ID:
- 5134329
- Report Number(s):
- DOE/ER/04679-T1; ON: DE82019095
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
CHALCOGENIDES
CRYSTAL STRUCTURE
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
LEAD COMPOUNDS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
POLARIZABILITY
TIN COMPOUNDS
TIN OXIDES