Strong ferroelectric and luminescence properties of 0-3 type 0.8BaTiO_(3)-0.2CaTiO_(3):Pr^(3+)composite ceramics prepared by cold sintering process  

作　　者：Xiaocui Rao Xueling Yang Renbing Sun Peng Du Hai Jiang Yao Huang Laihui Luo 

机构地区：[1]Department of Microelectronics Science and Engineering,School of Physical Science and Technology,Ningbo University,Ningbo 315211,China [2]College of Materials Science and Engineering,Ningbo University of Technology,Ningbo 315016,China

出　　处：《Journal of Advanced Ceramics》2024年第7期1002-1010,共9页先进陶瓷（英文）

基　　金：supported by the National Natural Science Foundation of China(No.12374087);the Key R&D Plan of Zhejiang Province(No.2022C01229);the Science and Technology Innovation 2025 Major Project of Ningbo City(No.2022Z211).

摘　　要：0-3 type ferroelectric-phosphor composite ceramics cannot be prepared by the traditional solid-state sintering(SSS)method due to the strong chemical reaction between ferroelectrics and phosphors during high-temperature sintering.The cold sintering process(CSP)may solve this issue by densifying ceramics at ultralow sintering temperatures.In this work,dense 0-3 type 0.8BaTiO_(3)-0.2CaTiO_(3):Pr^(3+)(0.8BT-0.2CT:Pr^(3+))binary composite ceramics were fabricated at an ultralow temperature of 225℃via CSP with the Ba(OH)2·8H2O hydrated flux.The effects of the Ba(OH)_(2)·8H2O content,sintering temperature,and sintering time on the microstructure and densification of the ceramics were investigated.The density of the composite ceramics prepared by the optimized sintering parameters reaches 89%.Both energy-dispersive X-ray(EDX)spectroscopy and X-ray diffraction(XRD)confirm the existence of BT and CT:Pr^(3+)phases in the prepared ceramics.A strong ferroelectric performance is obtained,and the luminescent properties of CT:Pr^(3+)are preserved for the ceramics.Furthermore,the 0.8BT-0.2CT:Pr^(3+)composite ceramics prepared by CSP have stronger photoluminescence and photo-stimulated luminescence than their counterparts prepared by cold sintering assistance(CSA)and SSS methods.Therefore,CSP is a promising method for combining luminescent and ferroelectric properties into 0-3 type composite ceramics.

关 键 词：single-step densification cold sintering composite ceramics FERROELECTRIC LUMINESCENCE 

分 类 号：TQ174.1[化学工程—陶瓷工业]