TITLE

Room-temperature multiferroic properties and magnetoelectric coupling in BiSmTiCoO ceramics

AUTHOR(S)
Paul, Joginder; Bhardwaj, Sumit; Sharma, Kuldeep; Kotnala, Ravinder; Kumar, Ravi
PUB. DATE
September 2014
SOURCE
Journal of Materials Science;Sep2014, Vol. 49 Issue 17, p6056
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present the structural, dielectric, ferroelectric, magnetic and magnetoelectric studies of lead free; single phase BiSmTiCoO (0 ≤ x ≤ 0.07) ceramics, synthesized using a standard solid-state reaction technique. Raman spectroscopy analysis reveals the relaxation of distortion in TiO octahedron. Field emission scanning electron microscopy confirmed the growth of plate-like grains. It is observed that with the substitution of Sm and Co ions the dielectric constant, loss tangent and ferroelectric transition temperature decreases. Electrical dc resistivity, remnant polarization and magnetization increases with increasing Sm and Co contents. The magnetoelectric coupling co-efficient, α = 0.65 mV cm Oe is realized for BiSmTiCoO ( x = 0.07) ceramic sample. Our results clearly demonstrate the lead free, multiferroic nature of Sm/Co-substituted BiTiO, which may find useful application in designing cost-effective electromagnetic devices.
ACCESSION #
96409760

 

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