Effect of local structural distortion on magnetic and dielectric properties in BiFeO3 with Ba, Ti co-doping

The structural, magnetic, and dielectric properties of Bi1−xBaxFe1−xTixO3 (x≤0.25) ceramics are studied systematically. The symmetry of the unit cell for BiFeO3 co-doping with Ba and Ti remains the space group of R3c. The addition of Ba and Ti increases the unit cell volume without changing the unit...

Full description

Saved in:
Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2015-07, Vol.468-469, p.81-84
Main Authors: Cheng, G.F., Ruan, Y.J., Liu, W., Wu, X.S.
Format: Article
Language:English
Subjects:
Bi1−xBaxFe1−xTixO3 (x≤0.25) ceramics
Charge compensation
Structural distortion
Vibration space
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The structural, magnetic, and dielectric properties of Bi1−xBaxFe1−xTixO3 (x≤0.25) ceramics are studied systematically. The symmetry of the unit cell for BiFeO3 co-doping with Ba and Ti remains the space group of R3c. The addition of Ba and Ti increases the unit cell volume without changing the unit cell symmetry. The remnant magnetization decreases monotonically with increasing the doping content, which may originate from contraction in Fe–O–Fe bond and FeO6 octahedron. Charge compensation occurs in BiFeO3 with Ba and Ti co-doping, which may suppress the charge defects and decrease the magnetism. The substitution of Fe with smaller radial Ti ion supplies larger vibration space in FeO6 octahedron, which may enhance the dielectric constant and decrease the dielectric loss significantly.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2015.04.023