Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5460366 | Journal of Alloys and Compounds | 2017 | 22 Pages |
Abstract
This study demonstrates the temperature dependent (carried out at 5, 150 and 300 K) magnetic properties of Zr4+ and Ti+4 substituted cobalt ferrite samples and their comparison. Polycrystalline Co1+xTxFe2â2xO4 (0 â¤Â x â¤Â 0.4 and T = Zr, Ti) series of compositions were prepared by conventional ceramic method. X-ray diffraction (XRD) confirmed the single phase cubic spinel structure, except for x = 0.4 composition. Coercivity (Hc) is observed to increase substantially with decrease in temperature for all Zr and Ti substituted samples. The magnetization and magnetocrystalline anisotropy constant (K1) were observed to peak at â¼150 K for both the series of samples. Field sensitivity of magnetization (dM/dH) increased with progressive Zr and Ti substitutions. Curie temperature of Co1.2Zr0.2Fe1.6O4 and Co1.2Ti0.2Fe1.6O4 samples (â¼445 °C and 472 °C respectively) decreased compared to that of pure cobalt ferrite (â¼517 °C).
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Vinitha Reddy Monaji, Srinivas Indla, Sudhindra Rayaprol, Shara Sowmya, A. Srinivas, Dibakar Das,