DocumentCode :
2232932
Title :
Conductivity investigations of pure and Ba, Ca, Sr doped BiFeO3
Author :
Greicius, S. ; Banys, J. ; Szafraniak, I. ; Kholkin, A.
Author_Institution :
Fac. of Phys., Vilnius Univ., Vilnius, Lithuania
fYear :
2009
fDate :
23-27 Aug. 2009
Firstpage :
1
Lastpage :
3
Abstract :
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.
Keywords :
barium; bismuth compounds; calcium; doping; ionic conductivity; multiferroics; permittivity; strontium; vacancies (crystal); Bi1-xBaxFeO3; Bi1-xCaxFeO3; Bi1-xSrxFeO3; BiFeO3; activation energy; bismuth ferrite; dielectric property; electrical conductivity; ionic conductivity; ionic radius; multiferroic nature; oxygen vacancies; relaxor-type dielectric dispersion; Barium; Bismuth; Calcium; Conducting materials; Conductivity; Dielectric constant; Dielectric measurements; Ferrites; Strontium; Temperature; bismuth ferrite; dielectric spectroscopy; ionic conductivity; oxygen vacancies;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Applications of Ferroelectrics, 2009. ISAF 2009. 18th IEEE International Symposium on the
Conference_Location :
Xian
ISSN :
1099-4734
Print_ISBN :
978-1-4244-4970-5
Electronic_ISBN :
1099-4734
Type :
conf
DOI :
10.1109/ISAF.2009.5307535
Filename :
5307535
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2232932
بازگشت