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- Title
Improvement in dielectric, piezoelectric and ferroelectric properties of 0.64PMN-0.36PT ceramics by Sb modification.
- Authors
Hussain, Abid; Sinha, Nidhi; Joseph, Abhilash; Dhankhar, Komal; Goel, Sahil; Kumar, Binay
- Abstract
Pure and Sb-doped 0.64PMN-0.36PT (PMN-PT) ceramics near MPB have been prepared using columbite precursor technique. The effects of Sb-doping on microstructure and electrical properties were studied systematically. Powder XRD and SEM exhibited the formation of pure perovskite phase with homogeneous microstructure. As compared to the pure PMN-PT ceramics, enhanced dielectric constant, and reduced transition temperature (T) and dielectric loss (tan δ) were observed for Sb-doped PMN-PT ceramics. Displacement-Voltage (D-V) butterfly hysteresis loops and quasi-static d meter revealed a higher value of piezoelectric charge coefficient (d) for Sb-doped sample (644 pm/V and 551 pC/N) as compared to pure ceramic (435 pm/V and 410 pC/N). P-E hysteresis curves showed improved ferroelectric properties after Sb doping. A high value of pyroelectric coefficient (p ∼ −1170.4 µC m °C) for Sb-doped PMN-PT ceramic was obtained. Sb-doped PMN-PT ceramic showed an excellent anti-fatigue nature over 10 switching cycles. Small leakage current was evident from J-E analysis for both the ceramics. Therefore, Sb-doped PMN-PT ceramic proved to be a better choice for applications in the electronic ceramic industries.
- Subjects
CERAMIC materials; ELECTRIC properties; LEAD titanate; FERROELECTRICITY; PIEZOELECTRIC ceramics; DIELECTRIC loss; TRANSITION temperature; ANTIMONY; LEAD oxides
- Publication
Journal of Materials Science: Materials in Electronics, 2017, Vol 28, Issue 19, p14298
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-017-7289-4