Conductivity investigations of pure and Ba, Ca, Sr doped BiFeO3

摘要：

Dielectric investigations of pure and diamagnetically substituted Bi1-xAExFeO3 (AE=Ca, Ba, Sr; x=0.1, 0.3) has been carried out. It has been shown that high conductivity of bismuth ferrite is due to movement of oxygen vacancies. Replacement of bismuth by barium, calcium or strontium increases the activation energy of the oxygen vacancies movement, but the activation energy does not follow any particular law over the average ionic radius of the A-site. Also, a relaxor-type dielectric dispersion has been revealed in doped bismuth ferrite, which is absent in pure BFO.

关键词： bismuth ferrite dielectric spectroscopy ionic conductivity ozygen vacancies

作者: S.Grei(c)ius J.Banys I.Szafraniak A. Kholkin

作者单位: Faculty of Physics Vilnius University,Sauletekio al.9,LT-10222 Vilnius,Lithuania Institute of Materials Science and Engineering Poznań University of Technology M.Skldowska-Curie Sq. Department of Ceramics and Glass Engineering and CICECO University of Aveiro 3810-193 Aveiro,Portuga

会议类型: 国际会议

会议名称: 2009 The 18th IEEE International Symposium on Applications of Ferroelectrics(2009年国际铁电学暨IEEE国际铁电应用联合会议)

会议地点: 西安

会议语种:英文

页码: 430-432

在线出版日期: 2009-08-23（万方平台首次上网日期，不代表论文的发表时间）