Structural and Dielectrics Properties of (1-x)Pb(Fe_2/3W_1/3)O₃-xPbTiO₃ Ceramics

Abstract:

Electric and dielectric properties of (1-x)Pb(Fe2/3W1/3)O3-xPbTiO3 solid solu¬tions were investigated as a function of the frequency and temperature. Dielectric measurements over the temperature showed the presence three contributions, which were related to the ferro-paraelectric phase transition (around 180K) and to conductive contributions (in the range 200K- 700 k). The FE phase transition of Pb(Fe2/3W1/3)O3 (PFW) is shifted to higher temperatures by PbTiO3 (PT) additions. Conductive contributions were associated to an electronic conductivity with activation energy around 0.45 – 0.55 eV.

• Periodical: Key Engineering Materials (Volumes 434-435)
• Pages: 307-310
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.434-435.307
• Online since: March 2010
• Authors: José Antônio Eiras, Bárbara M. Fraygola, Ducinei Garcia
• Keywords: Ferroelectric, Multiferroic, PFW

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