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SYNTHESIS, HIGH-RES...
SYNTHESIS, HIGH-RESOLUTION ELECTRON-MICROSCOPY AND CRYSTAL-STRUCTURE REFINEMENT OF THE CLUSTER COMPOUND BA3NB16O23 BY X-RAY AND NEUTRON-DIFFRACTION
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ZUBKOV, VG (författare)
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PERELEYAEV, VA (författare)
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TYUTYUNNIK, AP (författare)
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KONTSEVAYA, IA (författare)
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VORONIN, VI (författare)
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- SVENSSON, G, 1960- (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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(creator_code:org_t)
- Elsevier BV, 1994
- 1994
- Engelska.
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Ingår i: Journal of Alloys and Compounds. - : Elsevier BV. - 0925-8388 .- 1873-4669. ; 203, s. 209-216
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Ba3Nb16O23 was prepared by reducing a mixture of BaCO3 and Nb2O5 with acetylene soot under vacuum at 1550-1600-degrees-C. The structure was determined from high resolution electron microscopy images and was refined by the Rietveld technique using X-ray and neutron powder diffraction data. The unit cell parameters are a = 20.9301(4) angstrom, b = 12.4785(3) angstrom and c = 4.1619(1) angstrom, space group Cmmm, Z = 2. The crystal structure can be described as an intergrowth of BaNbO3 and NbO. Characteristic building units are quadruple chains of corner-sharing Nb6 octahedra connected via columns with a perovskite-type structure to form a three-dimensional network.
Nyckelord
- Materials Chemistry
- materialkemi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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