Question

what type of alignment in crystals makes them ferromagnetic

Answer 1

in ferromagnetic substances the allignment og crystals should be suck that they are alligned in one direction that is to the direction of magnetic field.They have net non zero dipole moment

Answer 2

    Ferromagnetism is a concept that arises due to attraction that is caused between two substances that are not electrically charged. This ferromagnetism happens which the crystals in the ferromagnetic object align themselves in a definite orderly pattern.

     It happens in an object when an external force align itself in a clear orderly manner towards a single direction. These materials are converted into magnet by applying continous magnetic field.