Preparation and characterization of Zn substituted Li-Mg ferrites
Studies on preparation and characterization of Zn substituted Li-Mg ferrites having the general formula Li{sub x}Mg{sub 0.4}Zn{sub 0.6-2x}Fe{sub 2+x}O{sub 4} (where x=0, 0.05, 0.1, 0.15, 0.2, 0.25, and 0.3) have been carried out. These polycrystalline ferrites were prepared by a standard ceramic technique. The single-phase formation was confirmed from X-ray diffractograms. The lattice parameter 'a', bond lengths R{sub A}, R{sub B} and site radii r{sub A}, r{sub B} were found to increase linearly with increase in Zn content. IR absorption spectral studies show two fundamental absorption bands {nu}{sub 1} and {nu}{sub 2} in the frequency range 600-400 cm{sup -1}. The center frequency of {nu}{sub 1} and {nu}{sub 2} was found to shift towards low frequency side. The average grain diameter determined from SEM studies was found to increase with Zn content, it is maximum for Zn=0.3 and then it decreases with further increase in Zn content. The Curie temperature was found to decrease linearly with Zn content.
- OSTI ID:
- 20883122
- Journal Information:
- Materials Research Bulletin, Vol. 37, Issue 15; Other Information: PII: S0025540802007444; Copyright (c) 2002 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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