Correlation between piezoelectric and magnetic properties of Fe and Sm co-substituted potassium niobate piezoelectric ceramics

A piezoelectric material KNbO3 has been co-substituted with the magnetic ions Sm3+ and Fe3+ in order to explore the relation between piezoelectricity and magnetism. The samples K1-xSmxNb1-xFexO3 [x = 0.0-0.1] were synthesized using a solid state reaction route, after estimating the structural stabil...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2018, Vol.20 (27), p.18800-18810
Main Authors: Swami, Madhvi, Verma, Onkar Nath, Tomar, Vandna, Kumar, Manish, Srivastav, Kamal K, Sathe, Vasant, Jha, Priyanka A, Singh, Prabhakar
Format: Article
Language:English
Subjects:
Chemical synthesis
Coercivity
Correlation
Dielectric properties
Ferroelectricity
High temperature
Iron
Magnetic properties
Magnetism
Piezoelectric ceramics
Piezoelectricity
Potassium niobates
Structural stability
Substitution reactions
Transition temperature
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Summary:A piezoelectric material KNbO3 has been co-substituted with the magnetic ions Sm3+ and Fe3+ in order to explore the relation between piezoelectricity and magnetism. The samples K1-xSmxNb1-xFexO3 [x = 0.0-0.1] were synthesized using a solid state reaction route, after estimating the structural stability with the substitution. Structural studies were employed using XRD with Rietveld refinement and Raman analysis suggesting Amm2 symmetry. Also, the transition temperature was observed to change with the increase in Sm and Fe content. This transition temperature was also confirmed through high temperature XRD and high temperature Raman results. The dielectric and piezoelectric properties were found to be in correlation with the intensity of Raman modes for substituted samples, indicating better ferroelectricity at x = 0.05. A correlation between piezoelectric and magnetic properties was established in terms of the coercive field and exchange energy.
ISSN:1463-9076
1463-9084
DOI:10.1039/c8cp01971a