Charge and Magnetic Orders in the Complex A-Site-Layer-Ordered Perovskite Y0.4Ba0.9Ca0.7Fe2O6 with Unusually High Valence Fe3.8+
Topochemical oxidation of the complex A site ordered perovskite compound with general formula Y0.4Ca0.9Ba0.7Fe2O5.20 results in the unusual high valence state Fe3.8+. The instability of this Fe 3.8+ at room temperature leads to a novel charge ordering in a layered-manner derived from the A-site ordering. At low temperature, a charge disproportionation takes place accompanied with an antiferromagnetic ordering. Neutron Diffraction experiments would provide essential information for detecting possible charge orderings as a result of the charge disproportionation as well as the magnetic structure derived from the magnetic transition.
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MARTINEZ DE IRUJO LABALDE Xabier; AMADOR Ulises; GARCIA MARTIN Susana and RITTER Clemens. (2019). Charge and Magnetic Orders in the Complex A-Site-Layer-Ordered Perovskite Y0.4Ba0.9Ca0.7Fe2O6 with Unusually High Valence Fe3.8+. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-23-732
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