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

doi:10.1109/TASC.2010.2089480

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

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 language	English
Article number	5648730
Pages (from-to)	3352-3355
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	21
Issue number	3 PART 3
DOIs	https://doi.org/10.1109/TASC.2010.2089480
State	Published - 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.

Keywords

Raman scattering spectroscopy
SmBCO coated conductors
Structural properties
Thickness dependence

Access to Document

10.1109/TASC.2010.2089480

Cite this

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title = "Characterization of co-evaporated SmBa2Cu3O 7 coated conductors by polarized-raman scattering spectroscopy",

abstract = "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.",

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author = "G. Kim and W. Jo and Ha, {H. S.} and Oh, {S. S.} and Park, {D. Y.} and H. Cheong",

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.",

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AU - Cheong, H.

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N2 - 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.

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