Crystal structure of BiPbSr2MnO6 by powder neutron diffraction

D. Levy, W. T. Fu, D. J.W. IJdo, M. Catti

Research output: Contribution to journalArticlepeer-review

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Abstract

The structure and the oxygen stoichiometry of the layered oxide BiPbSr2MnO6 has been examined by profile analysis from powder neutron diffraction data. The structure was refined in the space group Amaa (n°). The material has orthorhombic symmetry with lattice parameters a=5.3204(3), b=5.3796(3) and c=23.714(1) A ̊. Its structure is analogue to that of superconducting cuprate Bi2Sr2CuO6+δ, but without modulation. An important structural feature of BiPbSr2MnO6 is that the oxygens in the (Bi,Pb)O layer are disordered over two positions along the a-axis. The calculated effective valence of manganese is 3.2. The MnO6 octahedra are elongated along the c-axis, characteristics of the Jahn-Teller distortion of octahedra with Mn3+ ions.

Original languageEnglish
Pages (from-to)659-663
Number of pages5
JournalSolid State Communications
Volume92
Issue number8
DOIs
StatePublished - Nov 1994
Externally publishedYes

Keywords

  • B. chemical synthesis C. crystal structure and symmetry

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