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Structural and Magnetic Properties from Charge Orders in Iron Perovskite Oxides
Highly oxidized transition metal cations in oxides tend to display unusual electronic and magnetic behavior due to the highly covalent nature of the M-O interactions. Iron is of... -
Structural and Magnetic Properties from Charge Orders in Iron Perovskite Oxides
Highly oxidized transition metal cations in oxides tend to display unusual electronic and magnetic behavior due to the highly covalent nature of the M-O interactions. Iron is of... -
Crystal and magnetic structures of new layered perovskites of possible oxygen...
New layered perovskite compounds LaBaFeMnO5 and LaBaFeMnO6 were recently synthesized. They may be useful for future oxygen storage applications. Fe-Mössbauer spectroscopy has... -
Competing Antiferromagnetic and Ferromagnetic Ground States in CaFe3Ti4O12
Using high-temperature high-pressure synthetic methods we have recently prepared the new quadruple perovskite CaFe3Ti4O12. Curie-Weiss magnetic susceptibility and Mossbauer data... -
Crystal and Magnetic Structures of Unusually High Valence Fe Materials
Highly oxidized iron oxides such as SrFe4+O3, CaFe4+O3, and CaCu3Fe4O12 display unusual electronic and magnetic behaviors due to the highly covalent nature of the Fe-O... -
Spin and cation order in AMn3B4O12 perovskites
A-site-ordered perovskite oxides with formula AA'3B4O12 have a rich variety of physical and chemical properties. Most have Jahn-Teller active Cu2+ or Mn3+ at the square-planar... -
Structural and Magnetic Properties of New Pb2FeTeOx Phases
Pb2FeMO6 phases are of interest as potential multiferroics. We have prepared a new non-centrosymmetric pyrochlore-derived structure containing anion vacancy ordering... -
High Pressure Structural Study of BiCoO3
BiCoO3 is a perovskite type material recently prepared by high pressure-high temperature synthesis in Kyoto. It has a distorted acentric perovskite structure with order of high... -
Crystal and Magnetic Structures of Topochemically Oxidised A-site Ordered Mat...
The control of physical properties through cation ordering in perovskites often gives rise to unexpected and desirable functionality. Of particular interest in the preparation... -
High-pressure neutron diffraction studies of valence transitions in ACu3Fe4O12
Two new A-site ordered perovskite structure oxides, CaCu3Fe4O12 and LaCu3Fe4O12, were recently synthesized under high-pressure and high-temperature conditions in Kyoto. These... -
Crystal and magnetic structures of new layered perovskites of possible oxygen...
New layered perovskite compounds LaBaFeMnO5 and LaBaFeMnO6 were recently synthesized. They may be useful for future oxygen storage applications. Fe-Mössbauer spectroscopy has... -
Magnetic and crystal structures of new layered perovskites Ca2FeMnO6-d (d = 0...
New layered perovskite compounds Ca2FeMnO6 and Ca2FeMnO5.5 were recently synthesized. Ca2FeMnO6 was obtained by low-temperature topotactic oxidation of brownmillerite-type...
