Synthesis and characterization of ultrafine lithium ferrite from a citrate precursor |
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Authors: | VK Sankaranarayanan QA Pankhurst DPE Dickson CE Johnson |
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Institution: | Department of Physics, University of Liverpool, Liverpool, L69 3BX, UK |
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Abstract: | Ultrafine particles of lithium ferrite have been prepared at the unusually low temperatures of 240 and 455°C by a citrate precursor method. The materials obtained after annealing at temperatures between 455 and 700°C consist of ordered lithium ferrite as shown by the characteristics infrared absorptions, the X-ray diffraction superstructure reflections, and the 4.2 K Mössbauer spectra. The values of magnetization obtained are somewhat low, due to the presence of small quantities of an -Fe2O3 phase, which can also be observed in the X-ray diffraction and the Mössbauer spectra. |
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