Browsing Τμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering by Author "Veal, B. W."

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    • Article  

      Anisotropy of the optical dielectric function in the ab plane for YBa2Cu3O7- 

      Kotz, A. L.; Klein, M. V.; Lee, W. C.; Giapintzakis, John; Ginsberg, D. M.; Veal, B. W. (1992)
      We report ellipsometric measurements from surfaces of three single-crystal samples of YBa2Cu3O7. Two of the samples were untwinned with Tc=90 and 66 K. The third sample was a tetragonal single crystal with low oxygen content ...
    • Article  

      Optical studies of the a-, b-, and c-axis charge dynamics in YBa2Cu3O6+x 

      Cooper, S. L.; Reznik, D.; Kotz, A.; Karlow, M. A.; Liu, R.; Klein, M. V.; Lee, W. C.; Giapintzakis, John; Ginsberg, D. M.; Veal, B. W.; Paulikas, A. P. (1993)
      Optical and Raman-scattering studies of a-, b-, and c-axis YBa2Cu3O6+x between 0.025 and 5.5 eV are presented as a function of doping, and compared to the results of Bi2Sr2CaCu2O8 and La2-xSrxCuO4. Our doping-dependence ...
    • Article  

      Vibrational and electronic anomalies near Tc in tetragonal superconducting YBa2(Cu0.9557Fe0.05)3O7.1 

      Kimball, C. W.; Matykiewicz, J. L.; Lee, H.; Giapintzakis, John; Dwight, A. E.; Dunlap, B. D.; Jorgensen, J. D.; Veal, B. W.; Fradin, F. Y. (1988)
      Mössbauer effect studies have been made as a function of temperature for the orthorhombic (χ=0.01, 0.02) and tetragonal (χ=0.05) superconducting compounds YBa2(Cu1-χ57Feχ)3O7 + y. For Fe in or slightly displaced from the ...