Enhanced strain sensitivity in magnetostrictive spinel ferrite Co1−xZnxFe2O4

• Published in: Journal of magnetism and magnetic materials 2018-02, Vol.447, p.150-154
• Main Authors: Bhame, Shekhar D., Joy, P.A.
• Format: Article
• Language: English
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2017.09.075

•Magnetic properties Zn substituted CoFe2O4 explained based on the structural and microstructural features.•Magnetostriction as high as 200ppm exhibited by pure CoFe2O4.•A 30% rise in the strain sensitivity and a moderate magnetostriction exhibited by 20% Zn substitution. We report the magnetic and magnetoelastic properties of spinel oxide system Co1−xZnxFe2O4 (CZF series) where x = 0.0, 0.1, 0.2, 0.3, 0.4, and 0.5. All the composition were prepared by conventional solid state synthesis method and exhibited pure spinel phase formation. The lattice parameters showed gradual increase indicating uniform distribution Zn ions in cobalt ferrite lattice. The magnetic properties such as saturation magnetization and coercive field were drastically affected with Zn substitution showing enhanced saturation magnetization and a sharp decrease in the coercivity. The room temperature magnetostrictive properties showed a promising 30% enhancement in the slope of magnetostriction curve for x = 0.2 composition and a reasonable magnetostrictive strain of 110 ppm indicating its suitability as a promising magnetostrictive material.