Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Structural commonalities of high-temperature superconductors (1989)
    Springer
    Journal of superconductivity 2 (1989), S. 369-386 
    Details
    ISSN: 1572-9605
    Keywords: Structure ; Ba(Pb1−x Bi x )O3 ; YBa2Cu3O7−δ ; possible new superconductors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract It is shown that all of the presently known high-temperature superconductors belong to one structural type with a basic cell of approximate 4/mmm,D 4h symmetry in tetragonal compounds andmmm,D 2h symmetry in orthorhombic compounds. In the Ba(Pb1−xBi x )O3 and YBa2Cu3O7−δ compounds the basic cell is the unit cell and in the (La1−x Sr x )2CuO4, BiSrCaCuO and TIBaCaCuO compounds it is half the unit cell. The features of more than one copper oxide layer per basic cell, oxygen-free cation layers (e.g., Ca, Y) between CuO2 layers, and slightly puckered CuO2 planes seem to favor higher transition temperatures. The feasibility of several proposed or potentially superconducting structures are analyzed by this scheme.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00618524
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Magnetic penetration depth in high-T c superconducting Tl2Ca1Ba2Cu2O8−δ single crystals (1992)
    Springer
    Journal of superconductivity 5 (1992), S. 503-509 
    Details
    ISSN: 1572-9605
    Keywords: Tl2Ca1Ba2Cu2O8−δ ; penetration depth ; single crystals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The temperature dependence of Cu-O plane magnetic penetration depth,λ ab (T), for T1-2122 single crystals has been determined by measuring the low-field d.c. magnetization using a SQUID susceptometer. Almost full (97%) diamagnetism at low temperature was reached by carefully minimizing the background field, which is an essential condition for this method.λ ab (0) was obtained uniquely by a self-consistent condition to be 182 nm. Results of our measurements show a deviation from the single-band BCSs-wave prediction. The exponential behavior in very limited temperature regions may be reconciled with the BCS-like prediction. However, ourλ(T) data follow the theoretical prediction very accurately for ap-wave polar state pairing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00618240
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Crystal structure analysis of Y2Cu2O5 (1992)
    Springer
    Journal of superconductivity 5 (1992), S. 33-38 
    Details
    ISSN: 1572-9605
    Keywords: Yttrium ; copper ; X-ray ; crystal structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Single crystals of Y2Cu2O5 were obtained in the flux growth process by controlled heating of a mixture of Y2O3, BaO, and CuO in a molar ratio of 1∶8∶20. These crystals were analyzed by a single-crystal X-ray diffraction analysis. The crystal contains polymeric chains of Cu2O5 interspersed by yttrium ions surrounded by octahedral arrangements of oxygen atoms. Crystal data: space group=Pna21,a=10.799(2) Å,b=3.4990(5) Å,c=12.459(2) Å,Z=4, 380 reflections,R=0.026,R w=0.030.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00617994
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...