What state do Type II superconductors enter when the magnetic field is between $H_{c1}$ and $H_{c2}$?
Answer
A mixed state where flux partially penetrates in localized vortices.
Between $H_{c1}$ and $H_{c2}$, Type II superconductors enter a mixed state. In this condition, magnetic flux partially penetrates the material, confined within tubes called vortices, while the rest of the bulk material remains superconducting.
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