Stepwise amorphization of the flux-line lattice in Ca3Rh4Sn13: A peak-effect study
UNSPECIFIED. (2000) Stepwise amorphization of the flux-line lattice in Ca3Rh4Sn13: A peak-effect study. PHYSICAL REVIEW B, 61 (18). pp. 12394-12403. ISSN 1098-0121Full text not available from this repository.
The peak effect (PE) region in a single crystal of Ca3Rh4Sn13 is shown to comprise two discontinuous first-order-like transitions located near its onset and peak positions, in accordance with a stepwise fracturing of the flux-line lattice. Magnetization response to thermal cycling across the onset position produces an open hysteresis loop, consistent with the notion of the fracturing. A thermomagnetic history dependence study shows that the critical current density J(c)(H,T) is path dependent over a large part of the (H,T) parameter space. Tills path dependence ceases above the peak position of the peak effect, suggesting a complete amorphization of the flux-line lattice at (T-p,H-p) line. A plausible vortex phase diagram has been constructed for Ca3Rh4Sn13 in which phases like an elastic solid, a plastic solid, and pinned and unpinned amorphous states have been identified.
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||PHYSICAL REVIEW B|
|Publisher:||AMERICAN PHYSICAL SOC|
|Official Date:||1 May 2000|
|Number of Pages:||10|
|Page Range:||pp. 12394-12403|
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