Initial parts of the hysteresis loops. (a) all data and (b) data extracted for the 3 Oe/s SR to direct comparison. Black arrows are guides for finding the upper threshold field. The inset in (a) is an expanded part of the case of 3 Oe/s, and the arrow indicates the lower threshold field. The inset in (b) is an expanded part of the case of 200 Oe/s, and the arrow indicates the upper threshold field.
Initial parts of the magnetic hysteresis loops under various magnetic field SRs at (a) 10.8 K and (b) 11 K. Except for the 3 Oe/s result, the other graphs are shifted down by 0.015 emu. At 11 K, flux jumps do not appear.
(a) Temperature-magnetic field phase diagram. (b) Temperature dependence of the SR under a finite upper threshold field. The left side of a point is the flux-jump region and the right side is the no-flux-jump region.
Remanent parts of the magnetic hysteresis loops at (a) , (b) , and (c) .
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