In general, magnetism requires the material to be ordered, and heating an object up involves adding lots of random motion to the system. > The electrons might

In general, magnetism requires the material to be ordered, and heating an object up involves adding lots of random motion to the system. > The electrons might even get excited enough to jump to entirely different orbitals That's what causes hot objects to glow, basically -- the electrons get pushed to higher orbitals, and then fall back down again, emitting light.