Structural,microstructural and dielectric characterizations of(Bi_(0.5)Na_(0.5))TiO_(3) based lead-free ferroelectric ceramics

查看全文 作　　者：[1,2]B.R.Moya;[1]A.C.Silva;A.Peláiz-[3]Barranco;[1]J.D.S.Guerra

机构地区：[1]Grupo de Ferroelétricos e Materiais Multifuncionais Instituto de Física,Universidade Federal de Uberlandia Uberlandia,Minas Gerais 38408-100,Brazil;[2]Departamento de Física e Química,UNESP Campus de Ilha Solteira,Sao Paulo 15385-000,Brazil;[3]Grupo de Materiales Ferroicos Facultad de Física-Instituto de Ciencia y Tecnología de Materiales Universidad de La Habana,La Habana 10400,Cuba

出　　处：《Journal of Advanced Dielectrics》索引2021年第11卷第3期,共6页

基　　金：The authors thank the National Council of Scientific and Technological Development(CNPq)grants 401072/2014-2 and 303447/2019-2,Minas Gerais Research Foundation(FAPEMIG)grants PPM-00661-16 and APQ-02875-18 and Coordenacao de Aperfeicoamento de Pessoal de Nível Superior-Brasil(CAPES)-Finance Code 001 Brazilian agencies for the financial support. 摘　　要：(1-x)(Bi_(0.5)Na_(0.5))TiO_(3)-xBaTiO_(3) lead-free ceramics have been obtained from the conventional solid-state reaction sintering method.The structural properties were investigated from X-ray diffraction and Raman spectroscopy techniques.Results revealed well-crystallized ceramic samples with perovskite structure.Microstructural properties,obtained from scanning electron microscopy measurements,have shown high density with very low porosity level.The dielectric response,analyzed as a function of the temperature and several frequencies,showed very broad peaks with a strong frequency dependence of the temperature for the maximum dielectric permittivity for the modified system.Results were analyzed considering the influence of the BaTiO3 content on the studied physical properties. 关键词：LEAD-FREE BNT Raman spectroscopy dielectric response

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Structural,microstructural and dielectric characterizations of(Bi_(0.5)Na_(0.5))TiO_(3) based lead-free ferroelectric ceramics

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