Cu–Ce substituted cobalt nano ferrite - Structural,morphological, and magnetic behavior prepared by sol-gel auto-combustion |
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| Institution: | 1. Department of Physics, Andhra University, Visakhapatnam, A.P, India;2. Department of Basic Science and Humanities, Raghu Institute of Technology (A), Dakamarri, Bheemunipatnam Mandal, Visakhapatnam, A.P., India;3. Department of Physics, Sri Venkateswara College, Benito Juarez Marg, Dhaula, University of Delhi, New Delhi, 110021, India;4. Department of Engineering Physics, AUCE (A), Andhra University, Visakhapatnam, A.P, India;5. Department of Physics, College of Natural and Computational Science, Wolkite University, Wolkite, Ethiopia;1. Department of Mathematics, College of Engineering and Technology, Srinivas University, Mangalore, 574146, India;2. Department of Mathematics, Bapuji Institute of Engineering & Technology, Davanagere, 577004, India;3. Department of Computer Science & Engineering, Bapuji Institute of Engineering & Technology, Davanagere, 577004, India;4. Department of Chemistry, College of Engineering and Technology, Srinivas University, Mangalore, 574146, India;1. Department of Chemistry, Raghu Engineering College, Visakhapatnam, 531162, Andhra Pradesh, India;2. Department of Chemistry, Krishna University, Andhra Pradesh, 521004, India;1. Alpine Institute of Management and Technology, Dehradun, Uttarakhand, 248007, India;2. Department of Chemistry, H.N.B. Garhwal University, Srinagar, Garhwal, Uttarakhand, 246174, India;3. School of Applied and Life Sciences, Uttaranchal University, Dehradun, Uttarakhand, 248007, India;4. Department of Microbiology, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India;1. Inorganic Materials Research Laboratory, Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar, Nigeria;2. Computational and Bio-Simulation Research Group, University of Calabar, Calabar, P.M.B 1115, Nigeria;1. Deputy for Research and Innovation Infrastructure, National Research and Innovation Agency, Jl. Babarsari Postal Code 6101 ykbb, Yogyakarta, 55281, Indonesia;2. Research Center for Mining Technology, National Research and Innovation Agency, Kawasan Sains Tanjung Bintang Jl. Sutami KM 15, Tanjung Bintang, Lampung Selatan, 35361, Indonesia |
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| Abstract: | Sol-gel auto-combustion synthesized Co1-xCuxFe2-yCeyO4 (x = 0.0, 0.25, 0.5 and 0.75; y = 0.0, 0.03, 0.06, and 0.09), Cu–Ce substituted Co ferrite nanopowders. Investigations have been done on how Cu–Ce substitution affects the structural and magnetic characteristics. The Cu–Ce substitution variation effect on structural and magnetic properties is studied with X-ray diffraction (XRD), Field effect scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), and Vibrating sample magnetometer (VSM). The XRD was used to identify the crystal phase, and the role of Cu–Ce substituted for Co indicates how it formed. There is no change in the crystal structure, and no additional characteristic peak linked to Cu2+ and Ce3+ ions substitution was found in the XRD. The powder was sintered at 1100 °C. The crystallite sizes were found in between 33 and 62 nm. Increasing the Cu–Ce content decreases the lattice constant and is found between 8.4044 and 8.3309 Å. The FESEM images were used to analyze the nanostructural properties. The range of 110–128 nm is the value of average grain size. Two vibrational bands can be seen in FTIR spectra at about 600 cm?1 (v1) and 400 cm?1 (v2). They are attributed to the spinel lattices A and B sites, respectively. The tetrahedral site has a greater vibrational frequency of 566.09 cm?1, while the octahedral site has a lower vibrational frequency of 420.09 cm?1. FTIR spectra show the tetrahedral stretching peaks shifting towards lower frequencies with increasing Cu2+ and Ce3+ ions content. At ambient temperature, the magnetic properties of Cu–Ce substituted cobalt ferrites revealed a strong hysteresis loop. There was a decrease in magnetic saturation and an increase in coercivity. |
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| Keywords: | Spinel ferrites Sol-Gel XRD FTIR Magnetic properties |
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