Artículos de revistas
Thermomagnetic flux-jump instabilities and second magnetization peak in Bi2Sr2CaCu2O8 high-T-c superconducting crystals
Registro en:
Journal Of Low Temperature Physics. Kluwer Academic/plenum Publ, v. 116, n. 41732, n. 261, n. 276, 1999.
0022-2291
WOS:000082236100007
10.1023/A:1021893818924
Autor
Kopelevich, Y
Moehlecke, S
Torres, JHS
da Silva, RR
Esquinazi, P
Institución
Resumen
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. 116 41732 261 276