Berry, Frank J.; Ren, Xiaolin; Gancedo, J. Ramón and Marco, José F.
|DOI (Digital Object Identifier) Link:||http://dx.doi.org/doi:10.1023/B:HYPE.0000043250.73180.00|
|Google Scholar:||Look up in Google Scholar|
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|
|Copyright Holders:||2004 Kluwer Academic Publishers|
|Keywords:||57Fe Mössbuer spectroscopy; orthoferrites; mechanical milling|
|Academic Unit/Department:||Science > Life, Health and Chemical Sciences
Other Departments > Other Departments
|Depositing User:||David Shuker|
|Date Deposited:||09 Nov 2006|
|Last Modified:||04 Jul 2011 11:58|
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