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Type: Artigo de periódico
Title: Thermomagnetic flux-jump instabilities and second magnetization peak in Bi2Sr2CaCu2O8 high-T-c superconducting crystals
Author: Kopelevich, Y
Moehlecke, S
Torres, JHS
da Silva, RR
Esquinazi, P
Abstract: Measurements of the magnetization hysteresis loop performed on Bi2Sr2CaCu2O8 high-T-c superconducting single crystals reveal the occurrence of pronounced jumps of the irreversible magnetization at T>40K. 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<40K and leading to the so-called "second magnetization peak," is the manifestation of a thermomagnetic instability effect. it is suggested that the plastic vortes motion triggers the magnetic instabilities.
Country: EUA
Editor: Kluwer Academic/plenum Publ
Citation: Journal Of Low Temperature Physics. Kluwer Academic/plenum Publ, v. 116, n. 41732, n. 261, n. 276, 1999.
Rights: fechado
Identifier DOI: 10.1023/A:1021893818924
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

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