Title :
Investigation of Bi0.5Na0.5TiO3-PbTiO3 system for high temperature dielectrics
Author :
Kuharuangrong, S. ; Schulze, W.A.
Author_Institution :
NYS Coll. of Ceramics, Alfred Univ., NY, USA
Abstract :
Bismuth Sodium Titanate (BNT) has been investigated widely in terms of phase transitions, dielectric, piezoelectric and pyroelectric properties. The first transition temperature of this material is about 220°C. However, doped with Pb this material gives a higher dielectric constant and a lower phase transition temperature. The dielectric properties and structure of xPbTiO3-(1-x) Bi0.5Na0.5TiO3 solid solution are investigated. The phase boundary of this system is between 15-17%Pb. Pb also decreases the broadness of BNT dielectric response. Modifications with cations such as K+ and La3+ in 10%Pb doped BNT were studied in terms of dielectric properties and broadened phase transitions
Keywords :
bismuth compounds; crystal structure; ferroelectric Curie temperature; ferroelectric materials; ferroelectric transitions; lanthanum; lead compounds; permittivity; piezoelectric materials; potassium; pyroelectricity; sodium compounds; 220 C; BNT dielectric response; Bi0.5Na0.5TiO3-PbTiO3 system; Bi0.5Na0.5TiO3-PbTiO3:La,K; K+; La3+; broadened phase transitions; dielectric constant; dielectric properties; high temperature dielectrics; phase boundary; phase transition temperature; phase transitions; piezoelectric properties; pyroelectric properties; structure; transition temperature; Bismuth; Dielectric constant; Dielectric losses; Dielectric materials; Frequency; Lattices; Phase change materials; Polarization; Solids; Temperature dependence;
Conference_Titel :
Applications of Ferroelectrics, 1994.ISAF '94., Proceedings of the Ninth IEEE International Symposium on
Conference_Location :
University Park, PA
Print_ISBN :
0-7803-1847-1
DOI :
10.1109/ISAF.1994.522429
