J. Phys. Soc. Jpn. 75, 074718 (2006) [9 Pages]
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Received February 15, 2006; Accepted May 9, 2006; Published July 10, 2006
We have investigated the presence of a two-peak feature spanning the peak effect (PE) region in the ac susceptibility data and magnetization hysteresis measurements over a wide field–temperature regime in few weakly pinned single crystals of 2 H -NbSe 2 , which display a reentrant characteristic in the PE curve near T c (0). We believe that the two-peak feature evolves into a distinct second magnetization peak (SMP) anomaly well separated from the PE with gradual enhancement in the quenched random pinning.
©2006 The Physical Society of Japan
KEYWORDS: peak effect, second magnetization peak, split-peak structure in peak effect, vortex phase transformations, 2H-NbSe2
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