Transport properties of Tl1223 deposits for possible conductor applications

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We have investigated the microstructure and electrical transport properties of high-temperature superconducting (HTS) TlBa{sub 2}Ca{sub 2}CU{sub 3}0{sub 8{plus}x} (Tl1223) deposits on polycrystalline substrates of YSZ and silver. Samples were formed by deposition of a n-free or TI-poor precursor film, followed by thermal reaction with Tl{sub 2}0 vapor. The resulting deposits have c-axis perpendicular texture with local in-plane alignment, which leads to a colony-type microstructure and improved electrical transport properties. Transport properties on different samples, on the same samples at different widths, and on samples with artificially-induced strong flux pinning defects lead to the conclusion that a relatively small fraction of ... continued below

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7 p.

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Christen, D.K.; He, Q. & Paranthaman, P. December 1, 1995.

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Description

We have investigated the microstructure and electrical transport properties of high-temperature superconducting (HTS) TlBa{sub 2}Ca{sub 2}CU{sub 3}0{sub 8{plus}x} (Tl1223) deposits on polycrystalline substrates of YSZ and silver. Samples were formed by deposition of a n-free or TI-poor precursor film, followed by thermal reaction with Tl{sub 2}0 vapor. The resulting deposits have c-axis perpendicular texture with local in-plane alignment, which leads to a colony-type microstructure and improved electrical transport properties. Transport properties on different samples, on the same samples at different widths, and on samples with artificially-induced strong flux pinning defects lead to the conclusion that a relatively small fraction of the material comprises strongly-coupled current paths. Results on 3-20 {mu}m thick deposits on silver indicate that these materials may be useful as a new class of HTS conductors.

Physical Description

7 p.

Notes

OSTI as DE96005540

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  • 7. US/Japan workshop on high temperature superconductors, Tsukuba (Japan), 22-24 Oct 1995

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  • Other: DE96005540
  • Report No.: CONF-9510250--4
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 198712
  • Archival Resource Key: ark:/67531/metadc665440

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  • December 1, 1995

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Jan. 21, 2016, 1:23 p.m.

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Christen, D.K.; He, Q. & Paranthaman, P. Transport properties of Tl1223 deposits for possible conductor applications, article, December 1, 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc665440/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.