Question

what are the hard and soft magnetic materials ? give one example of each

Answer 1

The best examples of soft magnet are iron-silicon alloys, nickel-iron alloy and iron. Hard magnetic materials: These Magnetic materials retain their magnetism in absence of magnetic field and also known as permanent magnets. Alloys composed of iron, cobalt and aluminium are generally acted as hard magnetic materials.

Answer 2

hard one is iron.
Soft one i guess is soft iron core.