Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5458061 | Journal of Alloys and Compounds | 2018 | 7 Pages |
Abstract
(1-x)BiFeO3-xBa0.9Ca0.1Ti0.9Sn0.1O3 (0,1 < x â¤Â 0,5) ceramics are synthesized by conventional solid-state reaction method. These ceramics are characterized by X-ray diffraction, Raman spectroscopy, dielectric and magnetic measurements. X-ray diffraction data refined via Reitveld method revealed that the crystal structure changes from biphasic structures (R3c + Pnma) for x = 0.1; x = 0.2 and x = 0.3 with different percentages to orthorhombic (Pnma) for x = 0.4 and x = 0.5, with (Ba0.9Ca0.1Ti0.9Sn0.1) substitution. These results were confirmed by Raman spectroscopy analysis. Moreover, Ba0.9Ca0.1Ti0.9Sn0.1O3 doped BiFeO3 significantly reduces electric leakage and enhances dielectric properties. The obtained hysteresis loop (M-H) indicates that magnetization was enhanced and the maximum value of remnant magnetization occurred at x = 0.2 with Mr = 0.163 emu/g. This can be explained by the suppression of the cycloid spin structure. A further increase in the substitution percentage beyond the sample x = 0.20 caused a large reduction in residual magnetization due to the dominant participation of collinear antiferromagnetic scheduling in the Pnma space group.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
F. Mizouri, I. Kallel, N. Abdelmoula, D. Mezzane, H. Khemakhem,