Here e is a small positive number introduced to quantify paramagnetic
materials Next, we describe these materials in some detail TABLE 5 3
Diamagnetic
Paramagnetic
Ferromagnetic
–1 £ c < 0
0 < c <  e
c >> 1
0 £ mr < 1
1< mr < 1+ e
mr >> 1
m < m0
m > m0
m >> m0
5