Structural, Optical, and Magnetic Characterization of Spinel Zinc Chromite Nanocrystallines Synthesised by Thermal Treatment Method

Table 1

The average particle size of zinc chromite measured by XRD and TEM compared with the band gap energy for samples calcined at 773, 823, 873, 923, and 973 K.

Calcination temperature (K)	Average particle size XRD (nm)	Average particle size TEM (nm) ±2	Band gap energy (eV)
773	19	19	4.03
823	19	20	4.00
873	23	21	3.98
923	23	22	3.90
973	24	24	3.89