Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8153370 | Journal of Magnetism and Magnetic Materials | 2018 | 21 Pages |
Abstract
Cr doped cobalt ferrite nanoparticles were synthesized with the generic formula Co1-xCrxFe2O4 (xâ¯=â¯0, 0.05, 0.15, 0.25) through standard chemical co-precipitation method. XRD studies confirmed the pure spinel cubic structure belonging to Fd3¯m space group. From the Williamson-Hall plots, crystallite sizes were found to lie within the range (42â¯Â±â¯1)â¯nm for the different doped samples. The lattice parameter was found to decrease linearly with increase in the concentration of Cr3+ ion. The magnetic behavior of the samples was determined by M-H studies at 300â¯K, field cooled (5â¯T) at 5â¯K and temperature dependent studies. The M-H at 300â¯K show soft magnetic behavior whereas the M-H plots at 5â¯K predict the existence of in-homogeneity of the exchange interactions due to strong exchange coupling between the spins at the core and the surface of the nanoparticles.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Kamar Tanbir, Lalit Kumar Sharma, Aakash Aakash, Rakesh Kumar Singh, Ravi Kant Choubey, Samrat Mukherjee,