Would the maximum possible magnetisation of a paramagnetic sample be of the same order of magnitude as the magnetisation of a ferromagnet?

A Rowland ring of mean radius 15 cm has ,3500 turns of wire wound on a ferromagnetic core of relative permeability 800. What Is. the magnetic field B In the core,for a magnetising current of 1.2 A?

Why does a paramagnetic substance display greater magnetisation for .the same magnetising field when cooled. How does a diamagnetic substance respondto similar temperature changes?