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  • 1
    Electronic Resource
    Electronic Resource
    Magnetic properties of Nd3+ in Nd−Ba−Cu−O-compounds (1994)
    Springer
    The European physical journal 95 (1994), S. 301-310 
    Details
    ISSN: 1434-6036
    Keywords: 71.70.CH ; 74.70.Vy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Neutron diffraction, neutron spectroscopy and magnetization measurements have been employed to study the structural, electronic, and magnetic behavior of eleven compounds with the general formula Nd1+y Ca v Ba2−y−v Cu3O x (0≦y≦0.5; 0≦v≦0.25; 6≦x≦7). The structure turned out to react to oxygen reduction similar as other 123-compounds, yielding discontinuities close to the metal-insulator-transition and the well-known relations of bond lengths as a function ofT c. The crystalline electric field (CEF) interaction, splitting the 10-fold degenerate ground-state J-multiplet of the Nd3+-ions into five doublet states, was investigated by neutron spectroscopy. The derived CEF parameters have been used to determine changes in the electronic surroundings of the Nd3+ ions. In addition, with the help of the CEF parameters the thermodynamic magnetic properties of these compounds were calculated which turn out to be in good agreement with the experimental data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01343957
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  • 2
    Electronic Resource
    Electronic Resource
    The growth of rhododendrons in containers in soil, treated with either CaCO3, Ca(OH)2 or CaSO4 (1981)
    Springer
    Plant and soil 61 (1981), S. 479-483 
    Details
    ISSN: 1573-5036
    Keywords: Rhododendron ; Soil calcium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Rhododendrons were grown in containers for a period of six and a half years (six growth cycles) in soil mixes which contained liberal amounts of either CaCO3, Ca(OH)2 or CaSO4. No evidence was obtained to suggest that the plants were sensitive to liming of the soil or to excessive applications of calcium. The only reaction observed was a leaf chlorosis and veinal necrosis which developed for a brief period following the heavy application of CaSO4 in the fifth season. The application of Ca(OH)2 raised the pH throughout the soil profile to over 7, and CaSO4 induced a consistent increase in leaf calcium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02182028
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