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Effect of Ti substitution in place of Fe on crystal symmetries and magnetic properties of Bi0.850La0.150FeO3.
- Source :
-
Journal of Physics & Chemistry of Solids . Aug2018, Vol. 119, p107-113. 7p. - Publication Year :
- 2018
-
Abstract
- Lanthanum (La) modified BFO crystallize to an impurity free crystal structure and enhance the multiferroic properties in BFO. The Bi 0.850 La 0.150 FeO 3 is found to be optimized composition to have very good multiferroic properties. It is also reported that the Ti 4+ substitution significantly reduces the leakage current in BFO. Moreover, the Ti 4+ substitution is more effective than that of magnetic cations to increase the magnetization. Hence, Bi 0.850 La 0.150 Fe 1-x Ti x O 3 (x = 0.000, 0.025, 0.050, 0.100) polycrystalline samples were synthesized by the tartaric acid modified sol gel method and the effect of non-magnetic Ti substitution at the Fe-site of Bi 0.850 La 0.150 FeO 3 on crystal structure and magnetic properties has been studied. The Rietveld refinements of X-ray diffraction patterns indicate the structural transition from rhombohedral ( R3c ) to orthorhombic ( Pbnm ) with the increase in the substitution concentration. A gradual shift in the frequency of Fe-O stretching modes toward higher frequency in the FTIR spectra indicates a composition-driven structural transition. Magnetic properties of Bi 0.850 La 0.150 Fe 1-x Ti x O 3 polycrystalline samples were measured at room temperature with the applied field range of ±7 T. A significant increase in the magnetization with Ti substitution is observed from the magnetic hysteresis loops. The highest magnetic moment was observed for 2.5% Ti substitution at the Fe-site in Bi 0.850 La 0.150 FeO 3 . [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00223697
- Volume :
- 119
- Database :
- Academic Search Index
- Journal :
- Journal of Physics & Chemistry of Solids
- Publication Type :
- Academic Journal
- Accession number :
- 129374490
- Full Text :
- https://doi.org/10.1016/j.jpcs.2018.03.042