Thermal analysis of phase transitions in perovskite electroceramics
- 566 Downloads
Perovskite oxide ceramics have found wide applications in energy storage capacitors, electromechanical transducers, and infrared imaging devices due to their unique dielectric, piezoelectric, pyroelectric, and ferroelectric properties. These functional properties are intimately related to the complex displacive phase transitions that readily occur. In this study, these solid–solid phase transitions are characterized with dielectric measurements, dynamic mechanical analysis, thermomechanical analysis, and differential scanning calorimetry in an antiferroelectric lead-containing composition, Pb0.99Nb0.02[(Zr0.57Sn0.43)0.92Ti0.08]0.98O3, and in a relaxor ferrielectric lead-free composition, (Bi1/2Na1/2)0.93Ba0.07TiO3. The (Bi1/2Na1/2)0.93Ba0.07TiO3 ceramic develops strong piezoelectricity through electric field-induced phase transitions during the poling process. The combined thermal analysis techniques clearly reveal the differences in unpoled and poled ceramics.
KeywordsAntiferroelectrics Lead-free Phase transition Thermal analysis DSC DMA TMA
This work was supported by the National Science Foundation (NSF) through Grant CMMI-1027873.
- 1.Basic research needs for electrical energy storage. U.S. DOE Workshop Report (2007). http://science.energy.gov/~/media/bes/pdf/reports/files/ees_rpt.pdf. Accessed 14 Mar 2013.
- 2.Dougherty JP (1996) Cardiac defibrillator with high energy storage antiferroelectric capacitor. US Patent 5545184.Google Scholar
- 3.Gachigi KW (1997) Electrical energy storage in antiferroelectric-ferroelectric phase switching chemically modified lead zirconate ceramics. PhD dissertation, Pennsylvania State University.Google Scholar
- 7.He H, Tan X. Raman spectroscopy study of the phase transitions in Pb0.99Nb0.02[(Zr0.57Sn0.43)1-yTi0y]0.98O3. J Phys: Condens Matter. 2007;19:136003/1–13.Google Scholar
- 8.He H, Tan X. Electric field-induced transformation of incommensurate modulations in antiferroelectric Pb0.99Nb0.02[(Zr0.57Sn0.43)1−yTi0y]0.98O3. Phys Rev B. 2005;72:024102/1–10.Google Scholar
- 11.Tan X, Frederick J, Ma C, Jo W, Rödel J. Can an electric field induce an antiferroelectric phase out of a ferroelectric phase? Phys Rev Lett. 2010;105:255702/1–4.Google Scholar
- 12.Tan X, Frederick J, Ma C, Aulbach E, Marsilius M, Hong W, Granzow T, Jo W, Rödel J. Electric-field-induced antiferroelectric to ferroelectric phase transition in mechanically confined Pb0.99Nb0.02[(Zr0.57Sn0.43)1−yTi0y]0.98O3. Phys Rev B. 2010;81:014103/1–5.Google Scholar
- 18.Ma C, Tan X, Dul’kin E, Roth M. Domain structure-dielectric property relationship in lead-free (1−x)(Bi1/2Na1/2)TiO3–xBaTiO3 ceramics. J Appl Phys. 2010;108:104105/1–8.Google Scholar
- 19.Ma C, Guo HZ, Beckman SP, Tan X. Creation and destruction of morphotropic phase boundaries through electrical poling: A case study of lead-free (Bi1/2Na1/2)TiO3–BaTiO3 piezoelectrics. Phys Rev Lett. 2012;109:107602/1–5.Google Scholar
- 20.Jaffe B, Cook WR, Jaffe H. Piezoelectric ceramics. Marietta: Adademic Press; 1971.Google Scholar
- 26.Mendes SF, Costa CM, Sencadas V, Pereira M, Wu A, Vilarinho PM, Gregorio R, Lanceros-Méndez S. Thermal degradation of Pb(Zr0.53Ti0.47)O3/poly(vinylidene fluoride) composites as a function of ceramic grain size and concentration. J Therm Anal Calorim. 2013;. doi: 10.1007/s10973-012-2918-x.Google Scholar