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How the superconducting transition temperature of niobium-titanium alloy changes with pressure and magnetic field

The superconducting transition temperature of niobium titanium alloy (NbTi) shows significant changes under the influence of pressure and magnetic field. Here are the key findings from related research:

Superconducting transition temperature changes with pressure
• Under normal pressure, the superconducting transition temperature of niobium-titanium alloy is 9.6K. This temperature increased significantly to 19.1K when ultrahigh pressures of up to 261.7 GPa were applied. This is the superconducting transition temperature currently known to be achieved by niobium-titanium alloys under the highest pressure.

• Research shows that niobium-titanium alloys can maintain superconductivity with zero resistance under extremely high pressures, making them one of the most pressure-resistant superconducting materials known.

Superconducting transition temperature changes with magnetic field
• Under the pressure of 211 GPa and the low temperature of 1.8K, the critical magnetic field of niobium-titanium alloy increases from 15.4T to 19T. This result shows the superior performance of niobium-titanium alloy in a strong magnetic field environment.

• It should be noted that niobium-titanium alloys will lose superconductivity in strong magnetic fields and their critical magnetic fields are relatively low, which limits their application under extreme conditions.

In conclusion
The superconducting transition temperature and critical magnetic field of niobium-titanium alloys are significantly affected by pressure and magnetic field. Under high-pressure conditions, its superconducting properties are enhanced, while quenching may occur in strong magnetic field environments. Such characteristics make niobium-titanium alloys of great application value in fields such as medical imaging and particle accelerators.