Flux pinning in superconducting amorphous Zr/sub 1-x/Co/sub x/

Journal Article · Thu Sep 01 04:00:00 EDT 1988 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00682149· OSTI ID:5931607

Li, Y F; Rapp, O

The pinning force F/sub p/ in amorphous Zr/sub 1-x/Co/sub x/ (x = 0.30; 0.35) is measured as a function of perpendicular field and temperature. The homogeneous samples exhibit a weak flux pinning force of about 10/sup 4/ N/m/sup 3/ in the temperature range 2-3 K. The field dependence of F/sub p/ at several temperatures can be explained by a collective pinning model in the Larkin-Ovchinnikov theory in three dimensions. Structural relaxation studies in amorphous ZrCo confirm that both T/sub c/ and F/sub p/ are sensitive to a slight isothermal annealing treatment at 220/degrees/C for 1 h. The collective flux-pinning characteristics still remain after such a structural relaxation, which allows the authors to conjecture that these defects are stable against this thermal treatment.

• Research Organization: Harbin Univ., of Science and Technology (China)
• OSTI ID: 5931607
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 72:5-6; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
AMORPHOUS STATE
ANNEALING
COBALT ALLOYS
CRITICAL CURRENT
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL MODELS
CRYSTAL STRUCTURE
CURRENT DENSITY
CURRENTS
ELECTRIC CURRENTS
HEAT TREATMENTS
MAGNETIC FIELDS
MAGNETIC FLUX
MATHEMATICAL MODELS
RELAXATION
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THREE-DIMENSIONAL CALCULATIONS
TYPE-II SUPERCONDUCTORS
ULTRALOW TEMPERATURE
ZIRCONIUM ALLOYS