TY - JOUR
T1 - Crystal structure of BiPbSr2MnO6 by powder neutron diffraction
AU - Levy, D.
AU - Fu, W. T.
AU - IJdo, D. J.W.
AU - Catti, M.
PY - 1994/11
Y1 - 1994/11
N2 - 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.
AB - 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.
KW - B. chemical synthesis C. crystal structure and symmetry
UR - http://www.scopus.com/inward/record.url?scp=0028539916&partnerID=8YFLogxK
U2 - 10.1016/0038-1098(94)90448-0
DO - 10.1016/0038-1098(94)90448-0
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AN - SCOPUS:0028539916
SN - 0038-1098
VL - 92
SP - 659
EP - 663
JO - Solid State Communications
JF - Solid State Communications
IS - 8
ER -