Thermomagnetic flux-jump instabilities and second magnetization peak in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} high-{Tc} superconducting crystals
Journal Article
·
· Journal of Low Temperature Physics
- Univ. Estadual de Campinas, Sao Paulo (Brazil). Inst. de Fisica Gleb Wataghin
- Univ. Leipzig (Germany). Dept. of Superconductivity and Magnetism
Measurements of the magnetization hysteresis loop performed on Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} high-{Tc} superconducting single crystals reveal the occurrence of pronounced jumps of the irreversible magnetization at T > 40 K. In this work the authors demonstrate their thermomagnetic origin. It is also shown that the low-field hollow in the magnetization hysteresis loops measured at T < 40 K and leading to the so-called second magnetization peak, is the manifestation of a thermomagnetic instability effect. It is suggested that the plastic vortex motion triggers the magnetic instabilities.
- OSTI ID:
- 687509
- Journal Information:
- Journal of Low Temperature Physics, Vol. 116, Issue 3-4; Other Information: PBD: Aug 1999
- Country of Publication:
- United States
- Language:
- English
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