Fluorescence-based quantitative characterization of structural phase transitions in Li^(+)/Er^(3+):BaTiO_(3)ferroelectric ceramics

作     者：Jiaming Li Enwei Sun Yaping Ma Huashan Zheng Hua Zhao Zhiguo Zhang Jiaming Li;Enwei Sun;Yaping Ma;Huashan Zheng;Hua Zhao;Zhiguo Zhang

作者机构：School of PhysicsHarbin Institute of TechnologyHarbin 150001China Condensed Matter Science and Technology InstituteSchool of Instrumentation Science and EngineeringHarbin Institute of TechnologyHarbin 150080China School of Materials and EngineeringHarbin Institute of TechnologyHarbin 150001China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第92卷第33期

页      面：143-147页

核心收录：

学科分类：08[工学] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported in part by the National Key Basic Research Program of China[grant no.2013CB632900] the National Natural Science Foundation of China(NSFC)[grant no.11304061]。 

主　　题：Ferroelectrics Phase transition Fluorescence X-ray diffraction 

摘      要：We propose a method to quantitatively characterize the fine phase transition processes of Li^(+)/Er^(3+):BaTiO_(3)(BLET)ferroelectric materials by observing fluorescence wavelength shift.A lithium and erbium co-doped barium titanate ferroelectric ceramic was fabricated and the down-conversion infrared fluorescence spectra of the transition^(4)I13/2→^(4)I15/2 were measured as a function of temperature.The three structural phase transition processes,namely rhombohedral-orthorhombic,orthorhombic-tetragonal,and tetragonal-cubic transformations,determined by X-ray diffraction results are accompanied by corresponding changes in the position of the fluorescence peaks,yielding an exact consistency.This contactless,non-destructive and spatially-resolved fluorescence method provides a localized quantitative analysis for the phase transition processes of BLET ceramics.As this method is based on the fluorescence peak wavelength dependence on the crystal environment,it may potentially be used to characterize the phase transitions in other ferroelectric materials.