Ag. Bagul et al., CHEMICAL-PROCESSING OF SODIUM DOPED HEXAGONAL SR-FERRITE .4. MICROSTRUCTURAL AND MAGNETIC STUDIES, Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical, 34(3), 1995, pp. 176-180
The effects of sodium ions added before and after calcination of copre
cipitated hexagonal Sr-ferrite are investigated. The values of importa
nt performance parameters, namely, energy product (BH)(max), remanence
(B-r) and coercivity (H-b(c), H-l(c)) are significantly improved when
sodium ions are added after calcination. The better magnetic properti
es are assigned to the improved microscopic (structural and chemical)
homogeneity and sintered density.