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Title: | Heat capacity, thermopower and magnetoresistance effects in multiferroic La0.5Bi0.5Mn0.5Fe0.5O3 | Authors: | Jha, V.K. Nautiyal, P. Motin Seikh, M. Chatterjee, R. Mahendiran, R. Kundu, A.K. |
Issue Date: | Nov-2013 | Citation: | Jha, V.K., Nautiyal, P., Motin Seikh, M., Chatterjee, R., Mahendiran, R., Kundu, A.K. (2013-11). Heat capacity, thermopower and magnetoresistance effects in multiferroic La0.5Bi0.5Mn0.5Fe0.5O3. Journal of Materials Science 48 (21) : 7629-7634. ScholarBank@NUS Repository. https://doi.org/10.1007/s10853-013-7580-6 | Abstract: | We have carried out systematic investigations in perovskite multiferroic La0.5Bi0.5Mn0.5Fe0.5O3 by means of X-ray diffraction, magnetisation, electrical resistivity, thermoelectric and heat capacity measurements. The magnetic behaviour of this composition is rather complex, though the magnetisation curve seems to be like a weak ferromagnetic material. However, there is no clear evidence of λ-anomaly in the heat capacity data down to 2 K, yet this behaviour corroborate the trends of semiconducting silicon below room temperature. The sensitivity of magnetic behaviour to the iron-manganese ratio is also demonstrated. In presence of an external field of 7 T, it exhibits a magnetoresistance of -5 % at 130 K. The thermoelectric value increases linearly with decreasing temperature, and at room temperature the value is +85 μV/K, which is associated with the p-type polaronic conductivity. © 2013 Springer Science+Business Media New York. | Source Title: | Journal of Materials Science | URI: | http://scholarbank.nus.edu.sg/handle/10635/96766 | ISSN: | 00222461 | DOI: | 10.1007/s10853-013-7580-6 |
Appears in Collections: | Staff Publications |
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