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Nonlinear logarithmic time decay of magnetization in a single crystal of Bi sub 2 Sr sub 2 CaCu sub 2 O sub x

Journal Article · · Physical Review, B: Condensed Matter; (United States)
;  [1]
  1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois (USA)

Nonlinear logarithmic time decay of magnetization has been observed over a long measuring time period ({ital t}=22 h) for a single crystal of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub {ital x}}. At relatively low temperatures ({ital T}=12 K) linear ln({ital t}) decay of the magnetization is observed for field (=1 kG) parallel to the {ital c} axis, which can be described well by the Anderson-Kim model. However, at high temperatures ({ital T}{gt}26 K) the magnetization exhibits nonlinear logarithmic time near the irreversibility line. Possible connections between the experimental data and current theories are discussed.

DOE Contract Number:
W-31109-ENG-38
OSTI ID:
5237073
Journal Information:
Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 44:9; ISSN 0163-1829; ISSN PRBMD
Country of Publication:
United States
Language:
English