Investigating the Influence of Cu-Doped BaFe<subscript>12</subscript>O<subscript>19</subscript> on Physical and Optical Behavior of Its Nanocomposites with CoZnFe<subscript>2</subscript>O<subscript>4</subscript>.

In this report, we describe how copper-doped barium hexaferrite (CBM) influences the structure, elasticity, morphology, composition, and optical behavior in cobalt zinc ferrite (CZF) [(x)%CBM + (100-x)%CZF with x = 90, 80, 70 and 60] nanocomposites prepared by physical mixing. Analysis of the composites is performed using XRD, SEM, EDAX, FTIR, UV, and, PL. XRD confirms the formation of hexagonal and spinel structures along with their other structural parameters. Elastic parameters and Debye temperature are measured using FTIR. Young's modulus of 90%CBM + 10%CZF shows that the material can be used for shielding applications as well as in high-density optical storage devices. The morphology, particle size distribution, and comparison between crystalline and particle size of the composite are studied by SEM. The purity of the composite produced is analyzed using EDAX studies. From the UV analysis, the optical measurements of the manufactured composite such as transmission, absorption, refractive index, and Urbach energy were analyzed. Both the direct and indirect band gap energies increase with decreasing CBM in the composite. Among all the observed composites, 60%CBM + 40%CZF is found to be a suitable candidate for a visible-light active photocatalyst. The overall structural and optical properties also prove that the material can be used in tunable photonic applications. The refractive index of the composite is between 3.2 and 3.4, which can be used for photo-electrochemical cells, optical detectors, or reflectors. The optical band gap determined by UV–Vis spectroscopy was verified using PL spectra, which shows semiconducting properties that can be exploited in optoelectronic devices, photocatalysts, and sensor applications. [ABSTRACT FROM AUTHOR]

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