Magnetization of superconducting YBa2Cu3O7 and Ni- and Zn-substituted samples
Physica C. Bd. 153/155. H. 3. 1988 S. 1537 - 1538
Erscheinungsjahr: 1988
ISBN/ISSN: 0921-4534
Publikationstyp: Zeitschriftenaufsatz
Sprache: Englisch
Doi/URN: 10.1016/0921-4534(88)90409-1
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Inhaltszusammenfassung
We report dc-magnetization measurements of YBa2Cu3O7 and effects of substituting Cu by Ni and Zn. The differential susceptibilities dM/dH exhibit characteristic structur e, which we relate to the anisotropy of the lower critical fields Hc1,c and Hc1,c. Kinks in the Hc1-curves are observed for all samples. Parabolic approximation of Hc1(T) leads to a second, characteristic temperature below Tc, for which we discuss possible explanations.
Autoren
Ströbel, J. P. (Autor)
Thomä, A. (Autor)
Hensel, B. (Autor)
Saemann - Ischenko, G. (Autor)
Klassifikation
DFG Fachgebiet:
Physik der kondensierten Materie
DDC Sachgruppe:
Physik
