Properties of Bi0.8Ln0.2FeO3 (Ln=La, Gd, Ho) multiferroic ceramics
Bi0.8Ln0.2FeO3 (Ln=La, Gd, Ho) multiferroic ceramics were prepared by a solid state reaction method and their properties were investigated in detail. In the Rietveld refinements of the XRD data for these ceramics, good agreement between the measured and calculated patterns was observed. The leakage...
Saved in:
Published in | Ceramics international Vol. 41; no. 10; pp. 14718 - 14726 |
---|---|
Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
01.12.2015
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Bi0.8Ln0.2FeO3 (Ln=La, Gd, Ho) multiferroic ceramics were prepared by a solid state reaction method and their properties were investigated in detail. In the Rietveld refinements of the XRD data for these ceramics, good agreement between the measured and calculated patterns was observed. The leakage current density and resistivity of ceramics were analyzed, and it was found that Bi0.8Ho0.2FeO3 (BHFO) ceramics possessed much better electric insulation than Bi0.8La0.2FeO3 (BLFO) and Bi0.8Gd0.2FeO3 (BGFO) ceramics. Considerable differences in magnetic properties among BLFO, BGFO, and BHFO ceramics were observed and might be correlated with the suppression of the spatially modulated spiral spin structure. A notable exchange bias effect was observed in these ceramics at room temperature, which may be correlated with exchange interaction at the interfaces of weakly ferromagnetic and antiferromagnetic components. Moreover, the magnetoelectric (ME) coupling effect was confirmed in Bi0.8Ln0.2FeO3 (Ln=La, Gd, Ho) ceramics by the magnetic field induced polarization and dielectric investigations. |
---|---|
ISSN: | 0272-8842 1873-3956 |
DOI: | 10.1016/j.ceramint.2015.07.196 |