Structural Analysis and Normalised Susceptibility Study of Zn Substituted Li-Cu Ferrite

Sujata S. Khot^1,2*, Neelam S. Shinde^1,2, Nathani Basavaiah³, Shrikant C. Watawe⁴, Milind M. Vaidya⁵

¹D. B. J. College, Chiplun, India.
²Smt. Chandibai Himathmal Mansukhani College, Ulhasnagar, India.
³Indian Institute of Geomagnetism, New Panvel, India.
⁴P. D. Karkhanis College, Ambernath (East), India.
⁵Vedanta College of Management and Information Technology, Vitthalvadi (West), India.

DOI: 10.4236/oalib.1100697                

Abstract

Lithium ferrites have attracted considerable attention because they have been used as replacements for garnets due to their low cost. A series of polycrystalline ferrite samples with the composition of Li_xZn_0.6-2xCu_0.4Fe₂O₄ (x = 0.05, 0.1, 0.15, 0.2, 0.25, 0.3) at different chemical reaction temperature (100℃, 125℃ and 150℃) were prepared using non-conventional microwave sintering method. The characterization was carried out using X-rays technique. The X-ray analysis confirms the formation of single phase cubic structure. The lattice parameter ranges from 8.3690 Å to 8.4653 Å. The X-ray density shows the variation as a function of temperature of synthesis. The variation of AC susceptibility with temperature shows the existence of single domain structure for x ≥ 0.2 when the chemical reaction carried at 125℃ and 150℃ and exhibits super paramagnetic structure for all the composition prepared at 100℃. The samples x ≤ 0.2 shows multidomain structure for all the samples prepared at 125℃ and 150℃. The Curie temperature obtained using the susceptibility data are found to be in the range 350℃ to 700℃. An attempt has been made to synthesis the nanoparticles at lower reaction temperature by using non-conventional microwave sintering method.

Keywords

Microwave Sintering, X-Ray Diffraction, Lattice Parameter, AC Susceptibility, Curie Temperature

Conflicts of Interest

The authors declare no conflicts of interest.

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