Ping Miao

A-Site and B-Site Charge Orderings in an s–d Level Controlled Perovskite Oxide PbCoO3

Perovskite PbCoO3 synthesized at 12 GPa was found to have an unusual charge distribution of Pb2+Pb4+3Co2+2Co3+2O12 with charge orderings in both the A and B sites of perovskite ABO3. Comprehensive studies using density functional theory (DFT) calculation, electron diffraction (ED), synchrotron X-ray diffraction (SXRD), neutron powder diffraction (NPD), hard X-ray photoemission spectroscopy (HAXPES), soft X-ray absorption spectroscopy (XAS), and measurements of specific heat as well as magnetic and electrical properties provide evidence of lead ion and cobalt ion charge ordering leading to Pb2+Pb4+3Co2+2Co3+2O12 quadruple perovskite structure. It is shown that the average valence distribution of Pb3.5+Co2.5+O3 between Pb3+Cr3+O3 and Pb4+Ni2+O3 can be stabilized by tuning the energy levels of Pb 6s and transition metal 3d orbitals.

Hole-doping-induced melting of spin-state ordering in PrBaCo2O5.5+x

The layered perovskite cobaltite RBaCo

Large Magnetovolume Effect Induced by Embedding Ferromagnetic Clusters into Antiferromagnetic Matrix of Cobaltite Perovskite

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Crystal and Magnetic Structures of La2CoPtO6 Double Perovskite

O

Some topics in structural change on magnetic order

_{5.5}

Time of Flight Neutron Diffraction on NiO

(R: rare-earth elements or Yttrium) exhibits an abrupt temperature-induced metal

Structural and electronic properties of Sr{sub 1−x}Ca{sub x}Ti{sub 0.5}Mn{sub 0.5}O{sub 3}

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Soft ferromagnetism in mixed valence Sr(1-x)La(x)Ti(0.5)Mn(0.5)O₃ perovskites.

insulator transition (MIT) and has been attributed to spin-state ordering (SSO) of Co

Development of SuperHRPD, a TOF neutron powder diffractomter at J-PARC

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Bipartite magnetic parent phases in the iron oxypnictide superconductor

ions. Here we investigated the hole doping member of PrBaCo