Crystal growth of a novel oxygen-deficient layered perovskite: Ba7Li3Ru4O20 |
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Authors: | Katharine E Stitzer |
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Institution: | Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter St., Columbia, SC 29208, USA |
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Abstract: | Single crystals of both Ba7Li3Ru4O20 and Ba4NaRu3O12 were grown from reactive molten hydroxide fluxes. Ba7Li3Ru4O20 is a 7L-layer perovskite-related phase resulting from the stacking of six AO3] layers and one oxygen deficient AO2] layer, thereby creating LiO4 tetrahedra in addition to the LiO6 octahedra and face-sharing Ru2O9 bi-octahedra formed from the AO3] layers. The compound crystallizes in the space group with a=5.7927(1) Å and c=50.336(2) Å, Z=3. Ba4NaRu3O12 crystallizes in the space group P63mc with lattice parameters of a=5.8014(2) Å and c=19.2050(9) Å, Z=2. Ba4NaRu3O12 is identical to a previously reported neutron refinement structure. The magnetic properties of Ba7Li3Ru4O20 are also reported. |
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Keywords: | Ba7Li3Ru4O20 Ba4NaRu3O12 Oxide materials Oxygen deficient Crystal growth Single-crystal structure determination Magnetic properties |
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