Dielectric behavior and ac conductivity in Aurivillius Bi4Ti3O12 doped by antiferromagnetic BiFeO3

Bi5Ti3FeO15 ceramics were synthesized by the solid state reaction. XRD analysis shows a single phase perovskite structure with no impurities identified. Two obvious dielectric anomalies around 1007 and 1090 K were exhibited by this material, indicating that there are two phase transitions. While no...

Full description

Saved in:
Bibliographic Details
Published inPhysics letters. A Vol. 376; no. 28-29; pp. 2062 - 2066
Main Authors Wu, M.S., Tian, Z.M., Yuan, S.L., Duan, H.N., Qiu, Y.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 04.06.2012
Subjects
Antiferromagnetism
Ceramics
Conduction losses
Dielectric
Dielectrics
Ferroelectric
Hysteresis loops
Mathematical analysis
Microstructure
Perovskite
Polarization
Solid state physics
Perovskite
Ferroelectric
Ceramics
Microstructure
Dielectric
Online AccessGet full text

Cover

More Information
Summary:Bi5Ti3FeO15 ceramics were synthesized by the solid state reaction. XRD analysis shows a single phase perovskite structure with no impurities identified. Two obvious dielectric anomalies around 1007 and 1090 K were exhibited by this material, indicating that there are two phase transitions. While no peak was found in the tanδ–T curve. In addition, the conduction loss activation energies calculated at 476–639 K, 652–966 K, and 980–1095 K are 0.156, 0.262, and 0.707 eV, respectively. Polarization versus electric field hysteresis loops associated with 2Pr of 6.08 μC/cm2 and 2Ec of 59 kV/cm were obtained. ► Bi5Ti3FeO15 was prepared by the solid state reaction and characterized by XRD. ► Two dielectric anomalies around 1007 and 1090 K were exhibited in Bi5Ti3FeO15. ► Different conduction mechanisms resulted in different activation energies.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ObjectType-Article-1
ObjectType-Feature-2
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2012.01.012