The crystal structure of europium strontium manganese trioxide, Eu 0.6Sr0.4MnO3, has been refined using a multiply twinned single crystal containing six twin components. The MnO 6 octahedra show Jahn-Teller distortions with nearly fourfold symmetry, but the octahedral tilting scheme reduces the crystal symmetry to orthorhombic (space group Pbnm). The refinement of site occupancies and the analysis of difference Fourier maps show that the Eu3+ and Sr 2+ cations occupy different crystallographic positions with eightfold and twelvefold coordination, respectively.
Twinning and structure of Eu0.6Sr0.4MnO3 / R. Tamazyan, N. Rotiroti, S. Van Smaalen, Y. Mukovskii, A. Arsenov. - In: ACTA CRYSTALLOGRAPHICA. SECTION C, CRYSTAL STRUCTURE COMMUNICATIONS. - ISSN 0108-2701. - 62:1(2006), pp. i3-i5. [10.1107/S0108270105036644]
Twinning and structure of Eu0.6Sr0.4MnO3
N. Rotiroti;
2006
Abstract
The crystal structure of europium strontium manganese trioxide, Eu 0.6Sr0.4MnO3, has been refined using a multiply twinned single crystal containing six twin components. The MnO 6 octahedra show Jahn-Teller distortions with nearly fourfold symmetry, but the octahedral tilting scheme reduces the crystal symmetry to orthorhombic (space group Pbnm). The refinement of site occupancies and the analysis of difference Fourier maps show that the Eu3+ and Sr 2+ cations occupy different crystallographic positions with eightfold and twelvefold coordination, respectively.
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