Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 478, Issue 1-2, Pages 853-857Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2008.12.041
Keywords
PMN-PT; Relaxor; Dielectric response; Electrophoresis deposition
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Funding
- National Nature Science Foundation [50672075]
- Xi'an S&T Research Foundation [XA-AM-200608]
- EYTP
- NCET
- MOE [20050699011]
- Science Creative Foundation [2006CR06]
- Aeronautic Science Foundation [2006ZF53068]
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Lead magnesium niobate-lead titanate (0.80Pb(Mg1/3Nb2/3)O-3-0.20PbTiO(3), PMN-PT) thick films on platinum metallic foils were successfully fabricated by electrophoretic deposition (EPD). The room temperature relative dielectric constant and the maximum relative dielectric constant were 4645 and 25,640 at 1 kHz, respectively. The relaxor nature of PMN-PT thick films was studied in terms of diffused phase transition along with frequency dispersion of temperature of dielectric maximum (T-m). Deviation from Curie-Weiss behavior and temperature evolution of the local order parameter were found in the films. The degree of relaxation obtained from the modified Curie-Weiss law strongly suggests the relaxor behavior. Vogel-Fulcher relationship was used to analyze the frequency dependence of temperature of dielectric maximum (T-m). (C) 2008 Elsevier B.V. All rights reserved.
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