What happens to a Type I superconductor when the applied magnetic field strength exceeds its critical magnetic field ($H_c$)?

Answer

It exhibits a sharp transition, instantly becoming resistive with complete field penetration.

Type I superconductors, often pure metals, undergo a sharp transition; once the field exceeds $H_c$, the material instantly reverts to its normal resistive state, and the magnetic field penetrates completely.

What happens to a Type I superconductor when the applied magnetic field strength exceeds its critical magnetic field ($H_c$)?
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