S. Salem-sugui et Kc. Goretta, Effect of short-time magnetic relaxation on hysteresis curves in single-crystal Bi2Sr2CaCu2Ox, J SUPERCOND, 13(3), 2000, pp. 367-370
We have studied the role of short relaxation time on magnetic hysteresis in
a Bi2Sr2CaCu2Ox single crystal. Effects were examined by comparing isother
mal magnetization curves obtained over a range of temperatures as a functio
n of the applied magnetic field, H, for magnetic field ramp rates of 3 and
30 Oe/s. At low temperature, a second magnetization peak, H-p, was produced
by differences in magnetic relaxation occurring over a short period during
the initial stage of relaxation. The data suggested an absence of pinning
crossover for H approximate to H-p.