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Synthesis, Crystal Structure, and Magnetic Properties of MnFe 3 O 5
Author(s) -
Hong Ka H.,
McNally Graham M.,
Coduri Mauro,
Attfield J. Paul
Publication year - 2016
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201600365
Subject(s) - isostructural , orthorhombic crystal system , antiferromagnetism , crystal structure , materials science , crystallography , curie temperature , neutron diffraction , condensed matter physics , chemistry , ferromagnetism , physics
MnFe 3 O 5 was synthesized under a pressure of 10 GPa at 1400 °C. MnFe 3 O 5 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 Fe 4 O 5 . Magnetic measurements reveal an antiferromagnetic transition at 350 K and a broad Curie transition at 150 K, similar to the spin ordering temperatures of Fe 4 O 5 . 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.