From: Influence of calcination temperature on structural and magnetic properties of nanocomposites formed by Co-ferrite dispersed in sol-gel silica matrix using tetrakis(2-hydroxyethyl) orthosilicate as precursor
Temperature (°C)
Crystallite size (nm)
Ms (emu/g)
Mr (emu/g)
Coercivity Hc (Oe)
400
5.9
0.21
0.004
27
500
8.6
0.77
0.006
43
600
9.3
1.67
0.009
19
900
29.6
9.56
0.804
82
1000
34.3
12.01
2.130
220