MnFe3O5was synthesized under a pressure of 10 GPa at 1400 °C. MnFe3O5has 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 Fe4O5. Magnetic measurements reveal an antiferromagnetic transition at 350 K and a broad Curie transition at 150 K, similar to the spin ordering temperatures of Fe4O5. 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.
Synthesis, Crystal Structure, and Magnetic Properties of MnFe3O5
Coduri M.;
2016-01-01
Abstract
MnFe3O5was synthesized under a pressure of 10 GPa at 1400 °C. MnFe3O5has 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 Fe4O5. Magnetic measurements reveal an antiferromagnetic transition at 350 K and a broad Curie transition at 150 K, similar to the spin ordering temperatures of Fe4O5. 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.File in questo prodotto:
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