Sharma, Neha and Gaur, Anurag and Gaur, Umesh Kr and Kotnala, R. K. (2014) Observation of magnetoelectric coupling in (1-x) BaTiO3/(x) La0.7Sr0.3MnO3 composites. Journal of Alloys and Compounds, 592. pp. 244-249. ISSN 0925-8388

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Abstract

In the present work, we have synthesized BaTiO3 (BTO) and La0.7Sr0.3MnO3 (LSMO) composites, (1 - x) BTO/(x) LSMO with x = 0.05, 0.10, 0.15 and 0.20. X-ray diffraction (XRD) patterns show the peaks corresponding to both BTO and LSMO phase, which indicates the successful formation of composites. Polarization versus electric field (P-E) loops of sample with x = 0.05 shows feeble ferroelectric behaviour which tends towards lossy capacitor behaviour for x = 0.10. Further, no ferroelectric loop is observed for composites x = 0.15 and 0.20. It is observed that the value of dielectric constant and dielectric loss is maximum for x = 0.05 which decreases with the increment of LSMO content above x = 0.05. Furthermore, room temperature magnetization versus magnetic field (M-H) loops shows the saturation magnetization enhances from 0.063 to 0.218 emu/g for the sample x = 0.05-0.20, respectively. Magnetoelectric study reveals that the value of quadratic magnetoelectric coefficient beta decreases from 1.64 x 10 (4) to 3.75 x 10 (5) mv/cm Oe(2) for the composites x = 0.05 to x = 0.10, which indicates that maximum magnetoelectric coupling is present in the sample x = 0.05. Further, no magnetoelectric coupling is observed for the sample x = 0.15 and 0.20.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S Elsevier.
Uncontrolled Keywords:	Ferroelectricity Ferromagnetism Magnetoelectric coupling
Subjects:	Chemistry Materials Science Metallurgy & Metallurgical Engineering
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	29 Oct 2015 11:04
Last Modified:	29 Oct 2015 11:04
URI:	http://npl.csircentral.net/id/eprint/1444

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