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  • 1985-1989  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Lattice defects and flux pinning in crystallized metal-oxide glasses in the Bi-Sr-Ca-Cu-O system (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 1354-1356 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Large amounts of lattice defects have been observed in the crystallized metal-oxide glasses in the Bi-Sr-Ca-Cu-O system prepared by the rapid solidification method. The density of such defects has been found to greatly increase as the calcium and copper content of the starting material increases. These lattice defects are formed as a result of supersaturation of calcium and copper in the sample matrix. The intragrain critical current density has been found to increase 30 times in magnitude as the density of the lattice defects is increased in the sample matrix. The corresponding flux pinning mechanisms are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.101896
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic structures under pressure in cubic heavy-fermion compounds (1988)
    Springer
    Journal of low temperature physics 70 (1988), S. 377-391 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Neutron diffraction experiments under pressure on the cubic heavy-fermion compounds CeIn3 and CePb3 are reported. Resistivity measurements were performed on CeIn3 in order to study the approach to the magnetic-nonmagnetic transition. Comparisons are made with previous results obtained on CeAl2. In CePb3 and CeAl2, the pressure-induced change in the magnetic structure from modulated to simple-antiferromagnetic may correspond to a reduction of the magnetic anisotropy. The strong pressure decrease of the Néel temperature of CeIn3 for P〉15 kbar indicates the proximity of the transition from a magnetic to a nonmagnetic ground state. In cubic heavy-fermion compounds, the appearance of a nonmagnetic ground state seems to be directly connected to the recovery of the full multiplet degeneracy of the rare-earth ion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00682787
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    Paper (German National Licenses)
    Fulltext
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