Question

Distinguish between hard magnetic material and soft magnetic material. With example. ​

Answer 1

Answer:

Since soft magnetic materials can be demagnetized at low magnetic field, coercivity Hc is low. ... These materials are called hard magnetic materials, and are suitable for applications such as permanent magnets and magnetic recording media. Hard magnetic materials have high magnetocrystalline anisotropy.

Answer 2

Explanation:

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.