Dependency of Flux Jump on Temperature and Field-Sweep Rate for Textured (Nd1/3Eu1/3Gd1/3)Ba2Cu3O7-δ Bulk Superconductor with Gd-211 Particles
Anisotropy flux jumps in the mixed state of a textured (Nd0.33Eu0.33Gd0.33)Ba2Cu3O7-δ bulk superconductor with Gd-211 doping particles have been studied by means of magnetization measurements in the model of the magnetic field paralleling and perpendicular to the c axis. A typical anisotropy flux jump was observed at a temperature ranging from 2.0 to 3.0 K. Under the magnetic field perpendicular to c axis, no flux jump was found at whole temperature range until the sweep rate of 200 Oe/sec. For the magnetic field paralleling to the c axis, the number of flux jumps decreased with the increase of temperature, and the third quadrant of the M–H curve is the most flux-instability quadrant. The magnetic field sweep rate dependences of flux jumps were also studied and the influence of flux creep on flux jumps was also discussed.
KeywordsAnisotropy flux jump (Nd1/3Eu1/3Gd1/3)Ba2Cu3O7-δ superconductor OCMG method Gd-211 particles
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