Physics for IGCSE & O level - Magnets And Currents (Section 7 - No. 49)
What is the difference between a hard and a soft magnetic material?
Hard materials are always magnetic; soft materials are not.
Hard materials are easy to magnetize and demagnetize; soft materials are not.
Hard materials retain their magnetism; soft materials lose it easily.
Hard materials conduct electricity; soft materials do not.
Explicació
Hard retains, soft loses.