Electronic structure studies of Mg0.95Mn0.05Fe2−2xTi2xO4 (0x0.8) |
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| Authors: | Shalendra Kumar Ravi Kumar P Thakur KH Chae SK Sharma Alimuddin |
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| Institution: | aDepartment of Applied Physics, Aligarh Muslim University, Aligarh 202002, India;bInter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India;cMaterials Science and Technology Research Division, KIST, Seoul 136-791, Republic of Korea;dDepartment of Physics, H. P. University, Shimla 171005, India |
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| Abstract: | The electronic structure of Mg0.95Mn0.05Fe2−2xTi2xO4 (0x0.8) compound is investigated using near edge X-ray absorption fine structure, (NEXAFS) spectroscopy measurements, carried out at O K, Fe and Ti L3,2-edges at room temperature. The O K-edge spectra indicate that the Fe 3d orbitals have been considerably modified and a new spectral feature start dominating in the pre-edge region at higher Ti doping. The Fe 2p NEXAFS spectra exhibit a mixed valent Fe2+/Fe3+ states apart from the conversion of Fe3+ to Fe2+ with the substitution of Ti ions. The Ti L3,2-edge spectra indicate that Ti ions remain unchanged at 4+ state. These variations in the host electronic structure due to Ti substitution are consistent with the dielectric and transport properties of the material. |
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| Keywords: | Ferrite Electronic structure X-ray absorption spectroscopy |
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