Cation, magnetic, and charge ordering in MnFe(3)O(5)

The recently-discovered high pressure material MnFe(3)O(5) displays a rich variety of magnetically ordered states on cooling. Fe spins order antiferromagnetically below a Néel transition at 350 K. A second transition at 150 K marks Mn spin order that leads to spin canting of some of the Fe spins and...

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Detalles Bibliográficos
Autores principales: Hong, K. H., Arevalo-Lopez, A. M., Coduri, M., McNally, G. M., Attfield, J. P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2018
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6003543/
https://www.ncbi.nlm.nih.gov/pubmed/30009028
http://dx.doi.org/10.1039/c8tc00053k
Descripción
Sumario:The recently-discovered high pressure material MnFe(3)O(5) displays a rich variety of magnetically ordered states on cooling. Fe spins order antiferromagnetically below a Néel transition at 350 K. A second transition at 150 K marks Mn spin order that leads to spin canting of some of the Fe spins and ferrimagnetism. A further transition at 60 K is driven by charge ordering of Fe(2+) and Fe(3+) over two inequivalent Fe sites, with further canting of all spins. Electrical resistivity measurements reveal semiconducting behaviour in MnFe(3)O(5) with a change in activation energy at 285 K.

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