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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Macmillan Magazines Ltd.
    Nature 394 (1998), S. 157-159 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The critical temperatures of (Ln1−xMx)2CuO4 superconductors, in which Ln3+ (La and other lanthanides) and M2+ (Ca, Sr, Ba) cations are randomly distributed amongst the ‘type A’ lattice sites, ...
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 326-328 
    ISSN: 0044-2313
    Keywords: Lanthanum calcium copper gallate ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zur Kristallstruktur von LaCaCuGaO5Die Kristallstruktur von LaCaCuGaO5 wurde röntgenographisch an Einkristallen untersucht. Es kristallisiert orthorhombisch in der Raumgruppe C2v22-Ima2 mit a = 15,8467, b = 5,5077, c = 5,3188 Å, Z = 4. LaCaCuGaO5 gehört zum Brownmillerit-Typ und zeigt somit Schichten von eckenverknüpften CuO6-Oktaedern, die über GaO4-Tetraeder vernetzt sind. Die La3+- bzw. Ca2+-Ionen besetzen eine Punktlage statistisch.
    Notes: The crystal structure of LaCaCuGaO5 has been investigated by single crystal X-ray analysis. It crystallizes with orthorhombic symmetry, space group C2v22-Ima2, a = 15.8467, b = 5,5077, c = 5.3188 Å, Z = 4. LaCaCuGaO5 belongs to the mineral Brownmillerite showing layers of corner connected CuO6 octahedra linked by GaO4 tetrahedra. The La3+ and Ca2+ ions are distributed statistically over one crystallographic point position.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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