Magnetic response of type-II superconductors subjected to large-amplitude parallel magnetic fields varying in both magnitude and direction
Starting from our general critical-state theory, which includes the effects of both flux-line cutting and flux pinning, we develop a numerical method for finding the magnetic response of type-II superconductors subjected to parallel magnetic fields that change in both magnitude and orientation. We describe model calculations of the time-evolving magnetic profiles when the direction of an applied magnetic field of fixed magnitude oscillates with large amplitude, and we compare our results with related experiments by Cave and LeBlanc. We also report model calculations for the ac behavior when the sample is subjected to a dc bias field and a large-amplitude ac field at various angles (0/sup 0/, 45/sup 0/, and 90/sup 0/) relative to this field.
- Research Organization:
- Ames Laboratory-USDOE and Department of Physics, Iowa State University, Ames, Iowa 50011
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6384465
- Journal Information:
- J. Appl. Phys.; (United States), Vol. 58:11
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
TYPE-II SUPERCONDUCTORS
MAGNETIC PROPERTIES
MATHEMATICAL MODELS
CRITICAL CURRENT
MAGNETIC FIELDS
MAGNETIC FLUX
NUMERICAL SOLUTION
THEORETICAL DATA
CURRENTS
DATA
ELECTRIC CURRENTS
INFORMATION
NUMERICAL DATA
PHYSICAL PROPERTIES
SUPERCONDUCTORS
656101* - Solid State Physics- Superconductivity- General Theory- (-1987)
656102 - Solid State Physics- Superconductivity- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena- (-1987)