Ni0.5Cu0.5Fe2O4 nanocrystalline spinel ferrite was synthesized through a lactose monohydrate (C12H22O11 · H2O) mediated chemical preparation technique (post annealed at 600°C for 4 h). Various analytical results obtained after characterization measurements such as X-ray powder diffraction, ultra violet–visible spectroscopy and Fourier transform infrared spectroscopy measurements were discussed. X-ray diffraction pattern analysis confirmed the formation of nanocrystalline face-centered cubic lattice phase of Ni0.5Cu0.5Fe2O4 with crystallite size ∼9 nm. The Tauc plot corresponding to ultra violet–visible reflectance data employing the Kubelka– Munk function provided a direct transition band gap of 4.92 eV. The characteristic tetrahedral and octahedral vibration bands observed in the Fourier transform infrared spectrum further confirmed that Ni0.5Cu0.5Fe2O4 nanoparticles were crystallized in spinel structure.
The author V.T.S is thankful to CSIR, New Delhi, India, for granting Junior Research Fellowship. The authors are also thankful to the authorities of Research and Postgraduate Department of Physics (Approved Research Center of University of Kerala), S.N. College, Kollam-691001, Kerala, India for providing necessary facilities to carry out this research work. Further, thanks are extended to 2017 – 2019 batch MSc students at TKMM College, namely Keerthy M., Keerthy Roy, Nileena S. Rose, Ajeesha S., and Athira T. Mohan for the support rendered in sample synthesis and characterization part. Besides, thanks are due to Department of Physics and SICC at Kariyavattom Campus, University of Kerala, Thiruvananthapuram, Kerala, India for extending various facilities to perform characteristic measurements.
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