Cation, magnetic, and charge ordering in MnFe3O5. Issue 13 (24th January 2018)

• Record Type: Journal Article
• Authors: Hong, K. H.; Arevalo-Lopez, A. M.; Coduri, M.; McNally, G. M.; Attfield, J. P.
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 13(2018)
• Page Start: 3271
• Page End: 3275
• Publication Date: 2018-01-24
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8tc00053k
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : The high pressure material MnFe3 O5 displays a rich variety of magnetically ordered states on cooling through three separate phase transitions. Abstract : The recently-discovered high pressure material MnFe3 O5 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 MnFe3 O5 with a change in activation energy at 285 K.