Pinning performance of (Nd0.33Eu0.2Gd 0.47)Ba2Cu3Oy single crystal

M. Jirsa, M. Rames, P. Das, Michael Rudolf Koblischka, T. Wolf, U. Hartmann

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We present data on the flux pinning performance of a twinned (Nd 0.33Eu0.2Gd0.47)Ba2Cu 3Oy single crystal with a strip-like surface structure, in the temperature range 65 K to 90 K. The critical current density Jc, the pinning force density F(=BJc), and the logarithmic dynamic relaxation rate Q were determined from the magnetic hysteresis loops (MHLs) measured by vibrating sample magnetometer up to 9 Tesla. At 65 K, the MHL featured a strong second peak with the top slightly depressed by twin plane channeling. This effect continuously decreased with increasing temperature but persisted up to 84 K. The second peak decreased faster with increasing temperature than the central one. None of the Jc(B) and F(B) dependences scaled, let alone in a narrow range of T. This fact, together with the multiple linear character of the Q(B) curve, indicated a strong effect of twin channeling on the crystal's pinning performance. No special effect due to the strip-like structure was recognized.

Original languageEnglish
Article number012191
JournalJournal of Physics: Conference Series
Volume97
Issue number1
DOIs
Publication statusPublished - 2008 Feb 1
Externally publishedYes

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strip
single crystals
hysteresis
flux pinning
magnetometers
temperature
critical current
current density
curves
crystals

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Pinning performance of (Nd0.33Eu0.2Gd 0.47)Ba2Cu3Oy single crystal. / Jirsa, M.; Rames, M.; Das, P.; Koblischka, Michael Rudolf; Wolf, T.; Hartmann, U.

In: Journal of Physics: Conference Series, Vol. 97, No. 1, 012191, 01.02.2008.

Research output: Contribution to journalArticle

Jirsa, M. ; Rames, M. ; Das, P. ; Koblischka, Michael Rudolf ; Wolf, T. ; Hartmann, U. / Pinning performance of (Nd0.33Eu0.2Gd 0.47)Ba2Cu3Oy single crystal. In: Journal of Physics: Conference Series. 2008 ; Vol. 97, No. 1.
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