title: Structural, Optical, and Magnetic Properties of Zn-Doped CoFe2O4Nanoparticles.
abstract: The effect of Zn-doping in CoFe2O4nanoparticles (NPs) through chemical co-precipitation route was investigated in term of structural, optical, and magnetic properties. Both XRD and FTIR analyses confirm the formation of cubic spinel phase, where the crystallite size changes with Zn content from 46 to 77 nm. The Scherrer method, Williamson-Hall (W-H) analysis, and size-strain plot method (SSPM) were used to study of crystallite sizes. The TEM results were in good agreement with the results of the SSP method. SEM observations reveal agglomeration of fine spherical-like particles. The optical band gap energy determined from diffuse reflectance spectroscopy (DRS) varies increases from 1.17 to 1.3 eV. Magnetization field loops reveal a ferromagnetic behavior with lower hysteresis loop for higher Zn content. The magnetic properties are remarkably influenced with Zn doping; saturation magnetization (Ms) increases then decreases while both coercivity (HC) and remanent magnetization (Mr) decrease continuously, which was associated with preferential site occupancy and the change in particle size.
authors.affiliation: Department of Inorganic and Physical Chemistry, Vasyl Stefanyk Precarpathian National University, 57, Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine. tatarchuk.tetyana@gmail.com.
authors.forename: Tetiana
authors.initials: T
authors.lastname: Tatarchuk
authors.affiliation: Department of Physics, College of Science, University of Bahrain, PO Box 32038, Manama, Kingdom of Bahrain.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Bououdina
authors.affiliation: Faculty of Chemistry, Jagiellonian University, Ingardena Str., 3, 30-060, Kraków, Poland.
authors.forename: Wojciech
authors.initials: W
authors.lastname: Macyk
authors.affiliation: Faculty of Chemical Technology and Engineering, UTP University of Science and Technology, 3, Seminaryjna Str., 85-326, Bydgoszcz, Poland.
authors.forename: Olexander
authors.initials: O
authors.lastname: Shyichuk
authors.affiliation: Department of Inorganic and Physical Chemistry, Vasyl Stefanyk Precarpathian National University, 57, Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine.
authors.forename: Natalia
authors.initials: N
authors.lastname: Paliychuk
authors.affiliation: Department of Material Science and New Technology, Vasyl Stefanyk Precarpathian National University, 57, Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine.
authors.forename: Ivan
authors.initials: I
authors.lastname: Yaremiy
authors.affiliation: Department of Physics, College of Science, University of Bahrain, PO Box 32038, Manama, Kingdom of Bahrain.
authors.forename: Basma
authors.initials: B
authors.lastname: Al-Najar
authors.affiliation: Faculty of Chemistry, Jagiellonian University, Ingardena Str., 3, 30-060, Kraków, Poland.
authors.forename: Michał
authors.initials: M
authors.lastname: Pacia
keywords: Energy band gap; Ferromagnetism; Nanoparticles; Spinel ferrite; Vibrational modes