EVIDENCES OF A STRUCTURAL PHASE TRANSITION IN THE NEW Pb(Zr_(y)Ti_(1-y))O_(3)MODIFIED TELLURITE GLASS-CERAMIC COMPOSITE

作     者：J.D.S.GUERRA C.R.HATHENHER 

作者机构：Grupo de Ferroeletricos e Materiais Multifuncionais Instituto de FisicaUniversidade Federal de Uberlandia 38400-902UberlandiaMGBrazil 

出 版 物：《Journal of Advanced Dielectrics》 (先进电介质学报（英文）)

年 卷 期：2011年第1卷第2期

页      面：185-190页

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：The authors would like to thank FAPEMIG(Proc.No.00199/09) CNPq(Proc.No.301730/2009-1)Brazilian agencies for financial support 

主　　题：Tellurite glasses ferroelectrics glass-ceramics dielectric properties 

摘      要：The physical properties of the new TeO_(2)-B_(2)O_(3)-PbO_(2)(TBP)-based glass system,obtained from the usual melt-quench method,have been investigated taking into account the infuence of the Pb(Zr_(y)Ti_(1-y))O_(3)(PZT)ferroelectric system.A crystalline-like structure,which characterizes a glass-ceramic-like state,promoted by the ferroelectric phase,has been revealed from the X-ray diffraction results for the sample with higher PZT *** the other hand,results on the dielectric response revealed noticeable dielectric anomalies,which until now have not been *** fact,the dielectric and ferroelectric properties suggest the existence of a structural phase transition induced by the PZT crystalline phase,which indeed have been related to the ferroelectric polar-phase regions embedded into the glass matrix.