Superconductivity is a state exhibited by many conductors when cooled below their superconductivity transition temperature. Superconductivity is one of the most fascinating physical phenomena having a vast potentiality in practical application. A superconductor material exhibits zero electrical resistivity and complete diamagnetism. The superconducting state is influenced by temperature, magnetic field, and current. There exist critical values for these three parameters, above which values the material passes into normal state.
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