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| Article Name : | | | X-RAY AND IR STUDIES OF Ni0.5Mg0.5CrxFe2-xO4 FERRITE SYSTEM | | Author Name : | | | G. M. AGNIHOTRI, K. M. JADHAV AND G. K. BICHILE | | Publisher : | | | Ashok Yakkaldevi | | Article Series No. : | | | ROR-571 | | Article : | |  | Author Profile | | Abstract : | | | The polycrystalline samples of the mixed spinel series Ni0.5Mg 0.5CrxFe2-xO4 with x= 0.0, 0.2, 0.4, 0.6, 0.8, 1.0 have been prepared by standard ceramic technique and were studied by means of X-ray Diffraction and IR absorption spectroscopy. The X-ray analysis showed that the samples are formed in single-phase spinel structure. The lattice parameter 'a' obtained from X-ray diffraction data decreases with the increase of compositional parameter x. The infrared absorption spectra of all the samples of the series studied at room temperature in the range of 200cm-1- 1000cm-1 showed two main bands. The force constants K0 and Kt have been obtained from the IR absorption data. The force constants have been observed to decrease with the internuclear separation for both the octahedral and tetrahedral sites. | | Keywords : | | - IR absorption spectroscopy,IR absorption spectroscopy
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