[OldNavyVet]

a very intense magnetic field what are the possible applications

Compact atom smashers, clyclotrons, magnets, amplifiers, electric motors ...

[darth]

I dimly remember one of my company’s scientists had a project to use powerful magnetic fields to affect the rate of radioactive decay in nuke waste. He said he could hasten the half life to make it give up it’s energy much faster. This could provide a usable energy source while destroying nuke waste.

Dunno if it worked.

[SonOfDarkSkies]

Another application might be the possible replacement for silicon-based semiconductors with a material which is a significantly faster conductor of electricity and data (and probably significantly cooler).

[SonOfDarkSkies]

And batteries.