Mention the range of magnetic susceptibility for ( a) Diamagnetic substances ( DMS) (b) Paramagnetic substances (PMS) (c ) Ferromagnetic substances (FMS).

Explanation

(a) For DMS . `chi` is very low and negative - `10^(-9) "to" -10^(-5)` .
e.g : For copper , `chi "is " - 9.8 xx 10^(-6)`.
(b ) For PMS `chi` is very low but positive +`10^(-6) "to" + 10^(-4)`
e.g : For platinum , `chi "is " +2.9 xx 10^(-4)`.
(c ) For FMS `chi gtgt1, 10^(1) to 10^(+6)`.
e.g : Supermalloy ( Ni 79%, Fe 16% , Mo 5% ) has `chi = 10^(6)`.