In 1987, M. K. Wu and Paul Chu discovered Y1.2Ba0.8CuO4 (YBCO) with critical temperature (Tc) of 93 K. It has significantly lowered the cost of cooling of a material up to the point where superconductivity set in. Utilizing the cost reduction of attaining superconductivity and the vast amount of research to understand characteristics of high temperature oxide superconducting materials, there has been effort to use a high temperature superconductor as a coated conductor. It is important to characterize the materials precisely for stable performance before commercializing. We used polarized Raman scattering spectroscopy to study structural and stoichiometric information regarding YBa2Cu3O7-x, GdYBa2Cu3O7-x, and GdBa2Cu3O7-x produced by three leading groups of producing commercial grade high temperature superconductor coated conductors American Superconductor Corporation, Superpower, and SuNAM.
|Number of pages
|Progress in Superconductivity and Cryogenics (PSAC)
|Published - Dec 2015
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (NRF) with grants funded by the Korea government (MSIP) (2013 R1A1A2007951 and 2014R1A2A2A01004070) and by the Korea Electrotechnology Research Institute (KERI) primary research program through the National Research Council of Science & Technology (NST) funded by the Ministry of Science, ICT and Future Planning (MSIP) (No. 15-12-N0101-34).
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- Commercial-grade coated conductors
- Polarized raman spectroscopy