Question

compare hard and soft magnetic materials. Give example

Answer 1

iron and magnet are hard and soft magnetic material

Answer 2

Sr.No. Soft Magnetic Materials Hard Magnetic Materials

1 Soft magnetic materials are those materials which have a smaller area enclosed by their Hysteresis loop.) Hard magnetic materials are those materials which have a Larger area enclosed by their Hysteresis loop

2 They have low remnant magnetization . They have high remnant magnetization

3 They have low coercivity) They have high coercivity

4 They have high initial permeability) They have low initial permeability

5 Hysteresis loss is less) Hysteresis loss is higher

6 Eddy current loss is less )Eddy current loss is more for metallic types and low for ceramic types.

7 Used in transformer cores, motors, generators, electromagnets, etc.) Used in making permanent magnets, magnetic separators, magnetic detectors, speakers, microphones, etc.

eg  silicon alloys soft

ferric alloys -hard