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  • YBCO superconductor  (1)
  • catastrophe  (1)
  • Springer  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of superconductivity 12 (1999), S. 421-426 
    ISSN: 1572-9605
    Keywords: Crystal growth ; YBCO superconductor ; tetragonal ; orthorhombic ; twins
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract It is significant to study the problems how the tetragonal and orthorhombic structures of YBa2Cu3O y generate, since the structures closely relate to superconductivity. To deal with these problems, we approach the generation of tetragonal and orthorhombicity and their morphologies by SEM, TEM, and X-ray diffraction analysis, respectively. For interpreting the experimental phenomena, we put forward a crystal growth modal: the tetragonal grows at sintering temperatures, and the tetragonal transits to orthorhombicity and forms twins along [110] faces at annealing temperatures. This model agrees with experimental results well.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Applied mathematics and mechanics 14 (1993), S. 367-370 
    ISSN: 1573-2754
    Keywords: pansystems methodology ; bifurcation ; catastrophe ; chaos and stability ; nonlinear mechanics ; pansystems logic conservation law
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Mathematics , Physics
    Notes: Abstract It is in references [4, 5] that the combination of the relative researches of pansystems methodology and the researches of bifurcation, catastrophe, chaos and stability in nonlinear mechanics was put forward and the concepts were redefined from the point of view of pansystems methodology. The present paper studies the logic conservation law of these nonlinear mechanics phenomena under the framework of pansystems methodology.
    Type of Medium: Electronic Resource
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