Magnetic Flux Motion of Superconducting Bi-Sr-Ca-Cu-O Films after Ion Irradiation
Abstract
The temperature dependence of electrical resistance under applied magnetic fields was measured by the resistive method in polycrystalline Bi-Sr-Ca-Cu-O films after He ion irradiation at room temperature. The broadening of the transition temperature in the low resistance region was suppressed as the irradiation fluence increased. The effective activation energy was raised by ion irradiation. These changes are due to the presence of pinning centers produced by ion irradiation.
- Publication:
-
Japanese Journal of Applied Physics
- Pub Date:
- August 1990
- DOI:
- Bibcode:
- 1990JaJAP..29L1443H
- Keywords:
-
- Electrical Resistance;
- High Temperature Superconductors;
- Ion Irradiation;
- Magnetic Flux;
- Mixed Oxides;
- Superconducting Films;
- Temperature Dependence;
- Activation Energy;
- Bismuth Oxides;
- Calcium Oxides;
- Copper Oxides;
- Magnetic Fields;
- Pinning;
- Polycrystals;
- Strontium Compounds;
- Transition Temperature;
- Solid-State Physics