This paper highlights our work on the recent progress in novel elastico-mechanoluminescence(EML)materials CaZnOS:Mn^(2+)and CaZr(PO_(4))_(2):Eu ^(2+),which can simultaneously"feel"(sense)and"see"(i...This paper highlights our work on the recent progress in novel elastico-mechanoluminescence(EML)materials CaZnOS:Mn^(2+)and CaZr(PO_(4))_(2):Eu ^(2+),which can simultaneously"feel"(sense)and"see"(image)the applied mechanical stress as an intense and proportional luminescence.CaZnOS:Mn 2þcan sense various types of mechanical stress,including ultrasonic vibration,impact,friction and compression because of the large piezoelectric coefficient.CaZr(PO_(4))_(2):Eu ^(2+)with multiple trap levels shows a broad measurement range for dynamic load.Both of CaZnOS:Mn^(2+)and CaZr(PO_(4))_(2):Eu ^(2+)belong to the defect-controlled type pie-zoelectric phosphors,and their EML mechanisms could be explained using the piezoelectrically induced carrier de-trapping model.展开更多
Dielectric properties offerrite ceramics have been less reported than their magnetic properties.Ourrecent study indicated that ferrite ceramics with very low dielectric loss tangent can be developed byusing appropriat...Dielectric properties offerrite ceramics have been less reported than their magnetic properties.Ourrecent study indicated that ferrite ceramics with very low dielectric loss tangent can be developed byusing appropriate sintering aids,together with the optimization of other sintering parameters suchas sintering temperature and time duration.Among various candidates of sintering aids,Bi_(2)O_(3)isthe most promising one.It is important to find that the optimized concentration of sintering aid forfull densification is not sufficient to achieve lowest dielectric loss tangent.This short review was aimed to summarize the understanding in microstructural evolution,grain growth,densificationand dielectric properties offerrite ceramics as a function of sintering aid concentration and sinteringparameters,which could be used as a guidance to develop ferrite ceramics with low dielectric losstangents for various applications.展开更多
基金This work was supported by Shandong Provincial Natural Science Foundation,China(ZR2013EMQ003)Program of Science and Technology in Qingdao City(13-1-4-195-jch)CREST program of JST.
文摘This paper highlights our work on the recent progress in novel elastico-mechanoluminescence(EML)materials CaZnOS:Mn^(2+)and CaZr(PO_(4))_(2):Eu ^(2+),which can simultaneously"feel"(sense)and"see"(image)the applied mechanical stress as an intense and proportional luminescence.CaZnOS:Mn 2þcan sense various types of mechanical stress,including ultrasonic vibration,impact,friction and compression because of the large piezoelectric coefficient.CaZr(PO_(4))_(2):Eu ^(2+)with multiple trap levels shows a broad measurement range for dynamic load.Both of CaZnOS:Mn^(2+)and CaZr(PO_(4))_(2):Eu ^(2+)belong to the defect-controlled type pie-zoelectric phosphors,and their EML mechanisms could be explained using the piezoelectrically induced carrier de-trapping model.
文摘Dielectric properties offerrite ceramics have been less reported than their magnetic properties.Ourrecent study indicated that ferrite ceramics with very low dielectric loss tangent can be developed byusing appropriate sintering aids,together with the optimization of other sintering parameters suchas sintering temperature and time duration.Among various candidates of sintering aids,Bi_(2)O_(3)isthe most promising one.It is important to find that the optimized concentration of sintering aid forfull densification is not sufficient to achieve lowest dielectric loss tangent.This short review was aimed to summarize the understanding in microstructural evolution,grain growth,densificationand dielectric properties offerrite ceramics as a function of sintering aid concentration and sinteringparameters,which could be used as a guidance to develop ferrite ceramics with low dielectric losstangents for various applications.
