Answer
The difference is as follows:
For type I superconductors, with increasing magnetic field the material is completely diamagnetic and superconductive below HC, while at HC conduction becomes normal and the complete magnetic flux penetration takes place.
On the other hand, for type II superconductors, upon increasing the magnitude of the magnetic field, the transition from the superconducting to normal conducting states is gradual between lower-critical and upper-critical fields. Magnetic flux penetration is also gradual during the transition. Also, Type II generally have higher critical temperatures and critical magnetic fields.
Work Step by Step
The difference is as follows:
For type I superconductors, with increasing magnetic field the material is completely diamagnetic and superconductive below HC, while at HC conduction becomes normal and the complete magnetic flux penetration takes place.
On the other hand, for type II superconductors, upon increasing the magnitude of the magnetic field, the transition from the superconducting to normal conducting states is gradual between lower-critical and upper-critical fields. Magnetic flux penetration is also gradual during the transition. Also, Type II generally have higher critical temperatures and critical magnetic fields.