Authors: Joginder Paul Sumit Bhardwaj Kuldeep Kumar Sharma Ravinder Kumar Kotnala Ravi Kumar
Publish Date: 2014/05/31
Volume: 49, Issue: 17, Pages: 6056-6066
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−δ 0 ≤ x ≤ 007 ceramics synthesized using a standard solidstate reaction technique Raman spectroscopy analysis reveals the relaxation of distortion in TiO6 octahedron Field emission scanning electron microscopy confirmed the growth of platelike 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 coefficient α = 065 mV cm−1 Oe−1 is realized for Bi4−x Sm x Ti3−x Co x O12−δ x = 007 ceramic sample Our results clearly demonstrate the lead free multiferroic nature of Sm/Cosubstituted Bi4Ti3O12 which may find useful application in designing costeffective electromagnetic devicesWe would like to acknowledge Dr Mahavir Singh and Dr Nagesh Thakur Department of Physics Himachal Pradesh University Shimla India for magnetic ferroelectric and dielectric measurements Joginder Paul is thankful to the department of Higher Education Himachal PradeshIndia for providing study leave to conduct this work
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