Title :
Phase transitions and dielectric properties in Bi(Zn1/2Ti1/2)O3-ABO3 perovskite solid solutions
Author :
Huang, Chien-Chih ; Cann, David P.
Author_Institution :
Department of Mechanical Engineering, Oregon State University, Corvallis, 97331-6001, USA
Abstract :
A group of (1??x)Bi(Zn1/2Ti1/2)O3-??ABO3 (ABO3=BaTiO3, NaNbO3, BiScO3 and Bi1/2K1/2TiO3) polycrystalline ceramics were prepared by solid-state processing techniques. Based on x-ray diffraction results, the presence of Bi(Zn1/2Ti1/2)O3 in the solid solution decreases the structure stability of perovskite phase. The dielectric characterization revealed that the trends of transition temperature Tm as a function of composition of Bi(Zn1/2Ti1/2)O3-ABO3 could be described into two groups. The first one is Tm decreased until second phase appeared and the second one is Tm decreased and then increased as Bi(Zn1/2Ti1/2)O3 content increased. In addition, with substitution of Li for Na of NaNbO3-Bi(Zn1/2Ti1/2)O3 the diffuseness of the transition peak decreased and transition temperature increased.
Keywords :
Bismuth; Ceramics; Dielectrics; Ferroelectric materials; Piezoelectric materials; Powders; Solid state circuits; Stability; Temperature; X-ray diffraction; Ferroelectric; Pervoskites; Piezoelectricity;
Conference_Titel :
Applications of Ferroelectrics, 2008. ISAF 2008. 17th IEEE International Symposium on the
Conference_Location :
Santa Re, NM, USA
Print_ISBN :
978-1-4244-2744-4
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2008.4693889
