Correlating the size and cation inversion factor in context of magnetic and optical behavior of CoFe₂O₄ nanoparticles.

ABSTRACT: Herein, the size dependent behavior of cobalt ferrite nanoparticles was investigated using synchrotron radiation based techniques. Scanning electron micrographs revealed the enhancement of particle/crystallite size with increase of annealing temperature. Moreover, the shape of these particles also changed with increase of crystallite size. Saturation magnetization increased with increase of crystallite size. The higher saturation magnetization for larger crystallite size nanoparticles was attributed to a cation distribution similar to that of bulk CoFe₂O₄. The optical band-gap of these nanoparticles decreased from 1.9 eV to 1.7 eV with increase of crystallite size. The enhancement of the optical band-gap for smaller crystallites was due to phenomena of optical confine

SUBMITTER: Singh JP 

PROVIDER: S-EPMC9054365 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature