Thermomagnetic flux-jump instabilities and second magnetization peak in Bi sub(2)Sr sub(2)CaCu sub(2)O sub(8) high-T sub(c) superconducting crystals

Measurements of the magnetization hysteresis loop performed on Bi sub(2)Sr sub(2)CaCu sub(2)O sub(8) high-T sub(c) superconducting single crystals reveal the occurrence of pronounced jumps of the irreversible magnetization at T>40 K. In this work we demonstrate their thermomagnetic origin. It is...

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Bibliographic Details
Published in:Journal of low temperature physics 1999-01, Vol.116 (3), p.261-276
Main Authors: Kopelevich, Y, Moehlecke, S, Torres, JHS, da Silva, RRicardo, Esquinazi, P
Format: Article
Language:English
Subjects:
Bismuth compounds
Magnetic flux
Magnetic hysteresis
Magnetic variables measurement
Magnetization
Oxide superconductors
Single crystals
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Summary:Measurements of the magnetization hysteresis loop performed on Bi sub(2)Sr sub(2)CaCu sub(2)O sub(8) high-T sub(c) superconducting single crystals reveal the occurrence of pronounced jumps of the irreversible magnetization at T>40 K. In this work we demonstrate their thermomagnetic origin. It is also shown that the low-field hollow in the magnetization hysteresis loops measured at T
ISSN:0022-2291