Widatallah, H.M.; Johnson, C.; Berry, Frank; Jartych, E.; Gismelseed, A.M.; Pekala, M. and Grabski, J.
|DOI (Digital Object Identifier) Link:||http://dx.doi.org/10.1016/j.matlet.2004.12.017|
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Spinel-related Al-substituted Li0.5Fe2.5O4 has been synthesized by sintering a mixture of Al-substituted corundum-related alpha-Fe2O3 and Li2CO3 at 700 degreesC which is ca. 450-500 degreesC lower than the temperatures normally used to prepare the material by conventional ceramic methods. The cation distribution in the material was investigated with X-ray diffraction, Mossbauer spectroscopy and magnetic measurements. Rietveld refinement of the X-ray diffraction data shows the Al3+ ions to substitute for both Fe3+ and Li+ ions on octahedral B-sites while the displaced Li+ ions substitute for Fe3+ ones at tetrahedral A-sites. This structural model is consistent with Mossbauer and magnetic data.
|Item Type:||Journal Article|
|Extra Information:||Some of the symbols may not have transferred correctly into this bibliographic record and/or abstract.|
|Keywords:||Ceramics; Sintering; X-ray diffraction; Mössbauer spectroscopy|
|Academic Unit/Department:||Science > Life, Health and Chemical Sciences
|Depositing User:||David Shuker|
|Date Deposited:||09 Nov 2006|
|Last Modified:||14 Jan 2016 16:16|
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