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Synthesis, characterization and antistructure modeling of Ni nano ferrite

S. N. KaneMagnetic Materials Laboratory, School of Physics, D. A. University, Khandwa road, Indore−452001, IndiaS. RaghuvanshiMagnetic Materials Laboratory, School of Physics, D. A. University, Khandwa road, Indore−452001, IndiaM. SatalkarMagnetic Materials Laboratory, School of Physics, D. A. University, Khandwa road, Indore−452001, India‬V. Raghavendra ReddyUG-DAE Consortium for Scientific Research, University Campus, Khandwa road, Indore-452001, IndiaUday DeshpandeUG-DAE Consortium for Scientific Research, University Campus, Khandwa road, Indore-452001, IndiaТетяна ТатарчукDepartment of Pure and Applied Chemistry, Vasyl Stefanyk Precarpathian National University, 57, Shevchenko Str., Ivano-Frankivsk, 76018, UkraineF. MazaleyratSATIE, ENS Cachan, CNRS 8029, Universite Paris-Saclay, 61 Av. du Pdt. Wilson, F-94230, Cachan, France

2018en

ABI

Annotatsiya

We report the role played by cation distribution in determining magnetic properties by comparing dry gel, thermally annealed Ni ferrite prepared by sol-gel auto-combustion technique. X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Mössbauer spectroscopy were used to characterize the samples. Both XRD and Mössbauer measurements validate the formation of spinel phase with grain diameter 39.13−45.53 nm. First time antistructural modeling for Ni ferrite is reported to get information on active surface centers. Decrease of Debye temperature θD in annealed sample shows enhancement of lattice vibrations. With thermal annealing experimental and Néel magnetic moment (nBe, nBN) increases, suggesting migration of Ni2+ from B to A site with concurrent migration of Fe3+ from A to B site (non-equilibrium cationic distribution), affecting magnetic properties.

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Identifikatorlar

DOI: 10.1063/1.5032424

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