Peak effect on magnetic hysteresis in oxygen-overdoped single crystals of Tl{sub 2}Ba{sub 2}CuO{sub 6+{delta}}
- The James Franck Institute, The University of Chicago, Chicago, Illinois 60637 (United States)
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- National Research Institute for Metals, Tsukuba, Ibaraki 305 (Japan)
Magnetic hysteresis loops in single crystals of Tl{sub 2}Ba{sub 2}CuO{sub 6+{delta}} for H{parallel}c have been investigated in order to study the peak effect or {open_quotes}fishtail{close_quotes} feature. The peak effect was observed in a series of oxygen-overdoped crystals covering a wide range in T{sub c}. The peak fields H{sub pk} show scaling behavior with reduced temperature T/T{sub c}, and the normalized slope (T{sub c}/H{sub pk}) (dH{sub pk}/dT) is found to assume a nearly constant value for all investigated overdoped Tl-2201 crystals. This suggests that the underlying mechanism for the origin of the peak effect is independent of oxygen defect concentration. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 341396
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 59, Issue 21; Other Information: PBD: Jun 1999
- Country of Publication:
- United States
- Language:
- English
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