Title :
Phase transformation and phase distribution of pyrochlore structure in Bi2O3-ZnO-Nb2O5 system
Author :
Hong, WANG ; Xiaoli, WANG ; Xi, Yao
Author_Institution :
Electron. Mater. Res. Lab., Xian Jiaotong Univ., Xian, China
Abstract :
Using a quenching technique and powder X-ray diffractometry, the pyrochlore structure has been studied as a function of compositional variations. An isothermal phase diagram at 1000°C about the pyrochlore distribution area in the Bi2O3-ZnO-Nb 2O5 system has been obtained. The transformation mechanism of a cubic pyrochlore (α) to an orthorhombic pyrochlore (β) has been discussed
Keywords :
X-ray diffraction; bismuth compounds; ceramics; dielectric materials; niobium compounds; phase diagrams; polymorphic transformations; zinc compounds; 1000 degC; BZN based ceramics; Bi2O3-ZnO-Nb2O5; Bi2O3-ZnO-Nb2O5 system; compositional variations; cubic pyrochlore; isothermal phase diagram; orthorhombic pyrochlore; phase distribution; phase transformation; powder X-ray diffractometry; pyrochlore distribution area; pyrochlore structure; quenching technique; transformation mechanism; Bismuth; Capacitors; Ceramics; Dielectrics; Isothermal processes; Laboratories; Nonhomogeneous media; Powders; X-ray diffraction; Zinc oxide;
Conference_Titel :
Applications of Ferroelectrics, 1996. ISAF '96., Proceedings of the Tenth IEEE International Symposium on
Conference_Location :
East Brunswick, NJ
Print_ISBN :
0-7803-3355-1
DOI :
10.1109/ISAF.1996.598142
