Chapter 62 of 2364 min read

Dia-, para- and ferromagnetism

Why this is asked: Diamagnetism is present in every material, including paramagnetic and ferromagnetic ones — it's just too weak to notice once a stronger attractive effect is present. Above its Curie temperature, a ferromagnetic material loses its domains and simply becomes paramagnetic.

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Test yourself

•Match List I with List II.
List I (Material) List II (Susceptibility $χ$ )
A. Diamagnetic I. $χ = 0$
B. Ferromagnetic II. $- 1 \leq χ < 0$
C. Paramagnetic III. $χ ≫ 1$
D. Non-magnetic IV. $0 < χ < ε$ (a small positive number)
Choose the correct answer from the options given below:

List I (Material)	List II (Susceptibility $χ$ )
A. Diamagnetic	I. $χ = 0$
B. Ferromagnetic	II. $- 1 \leq χ < 0$
C. Paramagnetic	III. $χ ≫ 1$
D. Non-magnetic	IV. $0 < χ < ε$ (a small positive number)

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