Effect of barium doping on the field-induced piezoelectric properties of Pb(Mg/sub 1/3/Nb/sub 2/3/)O/sub 3/-PbTiO/sub 3/ ceramics

• Published in: ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Vol. 2; pp. 707 - 710 vol.2
• Main Authors: Huebner, W., Ciardullo, D., Wanrong Xue, Pei Wen Lu
• Format: Conference Proceeding
• Language: English
• Published: IEEE 1996
• Subjects: Barium; Calcination; Ceramics; Dielectric measurements; Doping; Electrostriction; Grain size; Niobium; Powders; Relaxor ferroelectrics
• ISBN: 9780780333550; 0780333551
• DOI: 10.1109/ISAF.1996.598122

The objective of this research was to characterize the dielectric and induced piezoelectric properties of Ba/sup 2+/-doped, 0.87Pb(Mg/sub 1/3/Nb/sub 2/3/)O/sub 3/-0.13PbTiO/sub 3/ relaxor ferroelectrics. The induced k/sub t/'s measured at 25/spl deg/C depended strongly on the Ba/sup 2+/ amount and electric field, maximizing at a value of 0.59 for an applied field of 5 kV/cm and a 2% doping level. The corresponding k/sub p/ was 0.38. These results correlate well with the dielectric properties; the 2% composition exhibits the highest permittivity, with the macro-microdomain transition near 25/spl deg/C.