Time dependence of the magnetization of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} displaying the paramagnetic Meissner effect

Journal Article · Fri Sep 01 00:00:00 EDT 1995 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.52.7675· OSTI ID:115872

Magnusson, J; Bjoernander, M; Pust, L; Svedlindh, P; Nordblad, P ^[1]; Lundstroem, T ^[2]

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1. Department of Technology, Uppsala University, Box 534, S-751 21 Uppsala (Sweden)
2. Department of Inorganic Chemistry, Uppsala University, Box 531, S-751 21 Uppsala (Sweden)

The time dependence of the magnetization of a Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} sample displaying the paramagnetic Meissner effect has been studied as a function of field, temperature, and age of the system using superconducting quantum interference device magnetometry. The field-cooled magnetization is found to increase with time at low fields, while at higher fields the relaxation is negative. The zero-field-cooled relaxation shows an anomalous field dependence at low magnetic fields. The age of the system does not yield an observable influence on the time dependence of the magnetization. The results are discussed in terms of a model based on so called {pi} junctions.

• OSTI ID: 115872
• Journal Information: Physical Review, B: Condensed Matter, Vol. 52, Issue 10; Other Information: PBD: 1 Sep 1995
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
HIGH-TC SUPERCONDUCTORS
MAGNETIZATION
COPPER OXIDES
CALCIUM OXIDES
STRONTIUM OXIDES
BISMUTH OXIDES
MEISSNER-OCHSENFELD EFFECT
TIME DEPENDENCE
MAGNETIC FIELDS
SQUID DEVICES
RELAXATION