With the fast development of the power electronics,dielectric materials with high energy-storage density,low loss,and good temperature stability are eagerly desired for the potential application in advanced pulsed cap...With the fast development of the power electronics,dielectric materials with high energy-storage density,low loss,and good temperature stability are eagerly desired for the potential application in advanced pulsed capacitors.Based on the physical principals,the materials with higher saturated polarization,smaller remnant polarization,and higher electrical breakdown field are the most promising candidates.According to this rule,so far,four kinds of materials,namely antiferroelectrics,dielectric glass-ceramics,relaxor ferroelectric and polymer-based ferroelectrics are thought to be more likely used in next-generation pulsed capacitors,and have been widely studied.Thus,this review serves to give an overall summary on the state-of-the-art progress on electric energy-storage performance in these materials.Moreover,some general future prospects are also provided from the existed theoretical and experimental results in this work,in order to propel their application in practice.展开更多
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)(P...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 concentration.On the other hand,results on the dielectric response revealed noticeable dielectric anomalies,which until now have not been reported.In 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.展开更多
基金financial support from the National Natural Science Foundation of China under grant No.51002071the Program for New Century Excellent Talents in Universitythe Program for Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region.
文摘With the fast development of the power electronics,dielectric materials with high energy-storage density,low loss,and good temperature stability are eagerly desired for the potential application in advanced pulsed capacitors.Based on the physical principals,the materials with higher saturated polarization,smaller remnant polarization,and higher electrical breakdown field are the most promising candidates.According to this rule,so far,four kinds of materials,namely antiferroelectrics,dielectric glass-ceramics,relaxor ferroelectric and polymer-based ferroelectrics are thought to be more likely used in next-generation pulsed capacitors,and have been widely studied.Thus,this review serves to give an overall summary on the state-of-the-art progress on electric energy-storage performance in these materials.Moreover,some general future prospects are also provided from the existed theoretical and experimental results in this work,in order to propel their application in practice.
基金The authors would like to thank FAPEMIG(Proc.No.00199/09)CNPq(Proc.No.301730/2009-1)Brazilian agencies for financial support.
文摘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 concentration.On the other hand,results on the dielectric response revealed noticeable dielectric anomalies,which until now have not been reported.In 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.
