Paul, Joginder and Bhardwaj, Sumit and Sharma, Kuldeep Kumar and Kotnala, Ravinder Kumar and Kumar, Ravi (2014) Room-temperature multiferroic properties and magnetoelectric coupling in Bi4-x Sm (x) Ti3-x Co (x) O12-delta ceramics. Journal of Materials Science, 49 (17). 6056 -6066. ISSN 0022-2461
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Abstract
We present the structural, dielectric, ferroelectric, magnetic and magnetoelectric studies of lead free; single phase Bi4-x Sm (x) Ti3-x Co (x) O12-delta (0 a parts per thousand currency sign x a parts per thousand currency sign 0.07) ceramics, synthesized using a standard solid-state reaction technique. Raman spectroscopy analysis reveals the relaxation of distortion in TiO6 octahedron. Field emission scanning electron microscopy confirmed the growth of plate-like grains. It is observed that with the substitution of Sm3+ and Co3+ ions the dielectric constant, loss tangent and ferroelectric transition temperature decreases. Electrical dc resistivity, remnant polarization and magnetization increases with increasing Sm3+ and Co3+ contents. The magnetoelectric coupling co-efficient, alpha = 0.65 mV cm(-1) Oe(-1) is realized for Bi4-x Sm (x) Ti3-x Co (x) O12-delta (x = 0.07) ceramic sample. Our results clearly demonstrate the lead free, multiferroic nature of Sm/Co-substituted Bi4Ti3O12, which may find useful application in designing cost-effective electromagnetic devices.
Item Type: | Article |
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Additional Information: | Copyright for this article belongs to M/S Springer Verlag. |
Subjects: | Materials Science |
Divisions: | UNSPECIFIED |
Depositing User: | Dr. Rajpal Walke |
Date Deposited: | 04 Nov 2015 10:33 |
Last Modified: | 04 Nov 2015 10:33 |
URI: | http://npl.csircentral.net/id/eprint/1508 |
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