Dielectric characterization of (1-x)pmn-xpt (x = 0.07 and 0.10) ceramics synthesized by an ethylene glycol-based soft chemical route

Materials based on relaxor ferroelectrics have become one of the most important families of functional materials being explored for such applications as sensors/actuators, micro-electromechanical systems (MEMS), non-volatile random access memories, and high-energy-density capacitors. Fabrication of...

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Veröffentlicht in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2011-09, Vol.58 (9), p.1920-1927
Hauptverfasser: Tailor, Hamel N., Bokov, Alexei A., Ye, Zuo-Guang
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Sprache:eng
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Zusammenfassung:Materials based on relaxor ferroelectrics have become one of the most important families of functional materials being explored for such applications as sensors/actuators, micro-electromechanical systems (MEMS), non-volatile random access memories, and high-energy-density capacitors. Fabrication of high-quality relaxor-based ceramics remains, however, a challenging task. In this work, a new soft chemical synthetic method for the preparation of the complex perovskite-based relaxor ferroelectric solid solutions, (1-x) Pb(Mg 1/3 Nb 2/3 )O 3 -xPbTiO 3 was developed using ethylene glycol as the solvent. Ceramics with compositions of x = 0.07 and 0.10 were prepared and it was found that a 10% stoichiometric excess of Pb 2+ was required to compensate for lead oxide volatility at the high temperatures used for sintering. The ceramics produced by this method show excellent dielectric properties at room temperature, such as a high dielectric constant (~20 000) and low loss over a large temperatures range (tanδ
ISSN:0885-3010
1525-8955
DOI:10.1109/TUFFC.2011.2032