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Magnetization anomaly and anisotropy of Bi2Sr2CaCu2−xNixO8 single crystals

✍ Scribed by D.H. Ha; K.W. Lee; K. Oka; Y. Yamaguchi; F. Iga; Y. Nishihara

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
453 KB
Volume
260
Category
Article
ISSN
0921-4534

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✦ Synopsis

We have observed the anomalous magnetization of Bi2Sr2CaCu2_xNixO 8 (x = 0 and 0.02) single crystals. Anisotropy decreases with iodine intercalation although it expands the space between CuO 2 layers. Iodine intercalation seems to suppress the magnetization anomaly for Ni -0% crystals, but not for Ni = 1% substituted crystals. We have discussed these results in terms of the increase of anisotropy by Ni substitution and the dimensional crossover of flux lines. Effects of both oxygen concentration and substitution of a magnetic element for the Cu site on the anisotropy of Bi2Sr2CaCu20 s crystals show the same tendency as the case of the YBa2Cu30 7 superconductor.

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