Recent results in characterization of melt-grown and quench-melt- grown YBCO superconductors

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From the standpoint of applications, melt-grown (MG) and quench-melt-grown (QMG) bulk YBCO superconductors are of considerable interest. In this paper, we studied the intragranular critical current density (J{sub c}), the apparent pinning potential (U{sub o}), and the irreversibility temperature (T{sub irr}) of MG and QMG samples and compared the results to those for conventionally sintered YBCO. A systematic increase in U{sub o} and a slower drop in J{sub c} with temperature indicate a systematic improvement in flux-pinning properties in progressing from the sintered YBCO to QMG and MG samples. Weaker pinning is observed in the QMG YBCO than in the ... continued below

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Pages: (8 p)

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Balachandran, U.; Poeppel, R.B. (Argonne National Lab., IL (United States)) & Gangopadhyay, A.K. (Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering) February 1, 1992.

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From the standpoint of applications, melt-grown (MG) and quench-melt-grown (QMG) bulk YBCO superconductors are of considerable interest. In this paper, we studied the intragranular critical current density (J{sub c}), the apparent pinning potential (U{sub o}), and the irreversibility temperature (T{sub irr}) of MG and QMG samples and compared the results to those for conventionally sintered YBCO. A systematic increase in U{sub o} and a slower drop in J{sub c} with temperature indicate a systematic improvement in flux-pinning properties in progressing from the sintered YBCO to QMG and MG samples. Weaker pinning is observed in the QMG YBCO than in the MG samples.

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Pages: (8 p)

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OSTI; NTIS; INIS; GPO Dep.

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  • High T sub c SUH workshop on high temperature superconductivity (HTS) materials, bulk processing and bulk applications, Houston, TX (United States), 27-28 Feb 1992

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  • Other: DE92010281
  • Report No.: ANL/CP-75188
  • Report No.: CONF-920240--2
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 5633472
  • Archival Resource Key: ark:/67531/metadc1093697

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  • February 1, 1992

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  • Feb. 10, 2018, 10:06 p.m.

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  • April 17, 2018, 3:17 p.m.

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Balachandran, U.; Poeppel, R.B. (Argonne National Lab., IL (United States)) & Gangopadhyay, A.K. (Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering). Recent results in characterization of melt-grown and quench-melt- grown YBCO superconductors, article, February 1, 1992; Illinois. (digital.library.unt.edu/ark:/67531/metadc1093697/: accessed April 27, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.