Field- and temperature-dependent magnetic hysteresis in GdBa2Cu3O7-d ceramics

Magnetic hysteresis measurements are performed in GdBa2Cu3O7-*D ceramics, and effects of magnetic field, temperature and substitution are studied. The hysteresis *DM is found to decay exponentially with temperature: *DM #r exp[-T/T0]. The activation temperature 70 varies mildly around 20 K, which se...

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Published inPhysica. C, Superconductivity Vol. 388-389; pp. 419 - 420
Main Authors Nishida, A, Teshima, Sh, Taka, Ch, Shigeta, I
Format Journal Article
LanguageEnglish
Published 01.05.2003
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Summary:Magnetic hysteresis measurements are performed in GdBa2Cu3O7-*D ceramics, and effects of magnetic field, temperature and substitution are studied. The hysteresis *DM is found to decay exponentially with temperature: *DM #r exp[-T/T0]. The activation temperature 70 varies mildly around 20 K, which seems to depend on the magnetic field as H-1/n. Substitution tends to increase *DM at lower fields. The results are examined in relation to ceramic nature of the sample.
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ISSN:0921-4534