Formation and structural refinements of tunneled intergrowth phases in the Ga2O3-In2O3-SnO2-TiO2 system |
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Authors: | CR Maier |
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Institution: | Kazuo Inamori School of Engineering, Alfred University, 2 Pine Street, Alfred, NY 14802, USA |
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Abstract: | Over 100 samples were prepared as (Ga,In)4(Sn,Ti)n−4O2n−2, n=6, 7, and 9 by solid-state reaction at 1400 °C and characterized by X-ray diffraction. Nominally phase-pure beta-gallia-rutile intergrowths were observed in samples prepared with n=9 (0.17?x?0.35 and 0?y?0.4) as well as in a few samples prepared with n=6 and 7. Rietveld analysis of neutron time-of-flight powder diffraction data were conducted for three phase-pure samples. The n=6 phase Ga3.24In0.76Sn1.6Ti0.4O10 is monoclinic, P2/m, with Z=2 and a=11.5934(3) Å, b=3.12529(9) Å, c=10.6549(3) Å, β=99.146(1)°. The n=7 phase Ga3.24In0.76Sn2.4Ti0.6O12 is monoclinic, C2/m, with Z=2 and a=14.2644(1) Å, b=3.12751(2) Å, c=10.6251(8) Å, β=108.405(1)°. The n=9 phase Ga3.16In0.84Sn4TiO16 is monoclinic, C2/m, with Z=2 a=18.1754(2) Å, b=3.13388(3) Å, c=10.60671(9) Å, β=102.657(1)°. All of the structures are similar in that they possess distorted hexagonal tunnels parallel to the 010] vector. |
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Keywords: | Beta-gallia Rutile Intergrowth One-dimensional tunnel |
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