Berry, Frank J.; Ren, Xiaolin; Gancedo, J. Ramón and Marco, José F.
(2004).
| DOI (Digital Object Identifier) Link: | http://dx.doi.org/doi:10.1023/B:HYPE.0000043250.73180.00 |
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| Google Scholar: | Look up in Google Scholar |
Abstract
Perovskite-related phases of the type LaFe1-xCoxO3 (x = 0 and 0.5) have been synthesised by milling techniques. The materials are of smaller particle size and more susceptible to reduction in a flowing hydrogen/nitrogen gas mixture than their counterparts made by conventional solid state calcination methods. The presence of cobalt enhances the reducibility of iron in the perovskite-related structure and, in contrast to LaFeO3 where the oxide structure is at least partially retained even after treatment in the reducing atmosphere at 1150degreesC, treatment of LaFe0.5Co0.5O3 in a reducing atmosphere leads to reduction of both Fe3+ and Co3+, their segregation from the oxide matrix, and the formation of an iron-cobalt alloy.
| Item Type: | Journal Article |
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| Copyright Holders: | 2004 Kluwer Academic Publishers |
| ISSN: | 1572-9540 |
| Keywords: | 57Fe Mössbuer spectroscopy; orthoferrites; mechanical milling |
| Academic Unit/Department: | Science > Life, Health and Chemical Sciences Other Departments > Other Departments |
| Item ID: | 5747 |
| Depositing User: | David Shuker |
| Date Deposited: | 09 Nov 2006 |
| Last Modified: | 04 Jul 2011 11:58 |
| URI: | http://oro.open.ac.uk/id/eprint/5747 |
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