TITLE

La[sub 0.7]Sr[sub 0.3]MnO[sub 3]: A single, conductive-oxide buffer layer for the development of YBa[sub 2]Cu[sub 3]O[sub 7-δ] coated conductors

AUTHOR(S)
Aytug, T.; Paranthaman, M.; Kang, B. W.; Sathyamurthy, S.; Goyal, A.; Christen, D. K.
PUB. DATE
October 2001
SOURCE
Applied Physics Letters;10/1/2001, Vol. 79 Issue 14, p2205
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Coated conductor applications in power technologies require stabilization of the high-temperature superconducting (HTS) layers against thermal runaway. Conductive La[sub 0.7]Sr[sub 0.3]MnO[sub 3] (LSMO) has been epitaxially grown on biaxially textured Ni substrates as a single buffer layer. The subsequent epitaxial growth of YBa[sub 2]Cu[sub 3]O[sub 7-δ] (YBCO) coatings by pulsed laser deposition yielded self-field critical current densities (J[sub c]) of 0.5×10[sup 6] A/cm[sup 2] at 77 K, and provided good electrical connectivity over the entire structure (HTS+conductive-buffer+metal substrate). Property characterizations of YBCO/LSMO/Ni architecture revealed excellent crystallographic and morphological properties. These results have demonstrated that LSMO, used as a single, conductive buffer layer, may offer potential for use in fully stabilized YBCO coated conductors. © 2001 American Institute of Physics.
ACCESSION #
5227949

 

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