Characterization of co-evaporated SmBa2Cu3O 7 coated conductors by polarized-raman scattering spectroscopy

G. Kim, W. Jo, H. S. Ha, S. S. Oh, D. Y. Park, H. Cheong

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4 Scopus citations


SmBa2Cu3O7(SmBCO)-coated conductors were grown on IBAD-MgO templates by in-situ co-evaporation using a drum-in-dual-chambers system. The conductors, which had a coating thickness of up to 3 μ, showed a critical temperature of 92 ̃ 94 K and a critical current of 150 ̃ 625 A/cm-w at 77 K in a self-field. The phonon modes and cation disorder of the SmBCO-coated conductors were examined by polarized Raman scattering spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy. XRD showed (00l) peaks for the SmBCO phase. The Raman spectra revealed common vibration modes, including Ba-Ba stretching, Cu2-Cu2 stretching, O(2)+/O(3)-, and apical O(4) modes. In addition, polarized-Raman spectra were obtained to examine the crystal orientation and grain growth behavior. Structural information from the Raman spectra turned out to be useful to determine the optimal thickness of SmBCO-coated conductors with high critical currents.

Original languageEnglish
Article number5648730
Pages (from-to)3352-3355
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number3 PART 3
StatePublished - Jun 2011

Bibliographical note

Funding Information:
Manuscript received August 03, 2010; accepted October 18, 2010. Date of publication December 03, 2010; date of current version May 27, 2011. This work was supported by a Korea Science and Engineering Foundation (KOSEF) Grant funded by the Korea government (MEST) (R01-2008-000-21080-0) and a Grant from the Center for Applied Superconductivity Technology of the 21st Century Frontier R&D Program funded by the Ministry of Science and Technology, Republic of Korea.


  • Raman scattering spectroscopy
  • SmBCO coated conductors
  • Structural properties
  • Thickness dependence


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