Synthesis, Crystal Structure, and Magnetic Properties of MnFe3O5. Issue 23 (22nd November 2016)

• Record Type: Journal Article
• Authors: Hong, Ka H.; McNally, Graham M.; Coduri, Mauro; Attfield, J. Paul
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 642:Issue 23(2016)
• Page Start: 1355
• Page End: 1358
• Publication Date: 2016-11-22
• Subjects: High pressure synthesis; Iron oxides; Structural properties; Manganese; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201600365
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract : MnFe3 O5 was synthesized under a pressure of 10 GPa at 1400 °C. MnFe3 O5 has an orthorhombic structure (space group Cmcm, a = 2.9137(1), b = 9.8565(7) and c = 12.6143(6) Å at 300 K) and is isostructural with Fe4 O5 . Magnetic measurements reveal an antiferromagnetic transition at 350 K and a broad Curie transition at 150 K, similar to the spin ordering temperatures of Fe4 O5 . Variable temperature synchrotron X‐ray diffraction shows that the structure undergoes anisotropic thermal expansion below 350 K, but no long range charge ordering is observed in the crystal structure. Abstract :