Raman scattering studies of YBa2Cu3O7-X films grown by high-rate e-beam co-evaporation

E. Lee, H. R. Yoon, W. Jo, S. Yoon, H. Cheong, H. G. Lee, G. W. Hong, J. U. Huh, R. H. Hammond, M. R. Beasley

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We present results of Raman scattering studies of superconducting YBa 2Cu3o7-x (YBCO) films grown by a high-rate electron-beam co-evaporation method. It is shown by X-ray diffraction that the as-grown YBCO films have a highly c-axis oriented and in-plane aligned texture. Raman scattering measurements were used to study optical phonon modes, oxygen content and second phases of the YBCO coated conductors. Raman spectra of YBCO films with lower-transport properties exhibit additional phonon modes at ∼ 300 cm-1, ∼ 600 cm-1, and ∼ 630 cm-1, which are related to second-phases such as Ba2Cu3O 5.9 and BaCuO2. We also performed micro-Raman scattering measurements, which enable the local characterization of the material over a few micrometer scales. We could clearly determine the chemical homogeneities of the films on which we could not have information using XRD. Our results strongly suggest that micro-Raman scattering can be a very effective tool for characterizing structural and chemical properties, which is essential for optimizing growth conditions.

Original languageEnglish
Pages (from-to)3325-3328
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2
StatePublished - Jun 2007


  • Co-evaporation
  • Local chemical variation
  • Raman scattering
  • YBCO films


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