Magnetic properties and microstructure of BaFe(11.6-2x)TixMxO19 (M = Co, Zn, Sn) compounds
G. Mendoza-Suárez; L.P. Rivas-Vázquez; J.C. Corral-Huacuz; A.F. Fuentes; J.I. Escalante-García. Magnetic properties and microstructure of BaFe(11.6-2x)TixMxO19 (M = Co, Zn, Sn) compounds. Physica B: Condensed Matter (ISSN: 0921-4526). 2003, Vol. 339, p. 110-2003.
BaFe11.6-2xMxTixO19 (M=Co2+, Zn2+, Sn2+) compounds in powder form were prepared by a sol–gel route. The materials were annealed at several temperatures and characterised. The results showed that the cationic substitutions (x) lowered the coercivity (Hci), presumably due to the decrease of the magnetocrystalline anisotropy of the doped Ba ferrites. Sn–Ti mixtures decreased Hci faster than Zn–Ti and Ti–Co; however, lower magnetisations were achieved. In this regard, BaMZn–Ti showed slightly higher magnetisation than BaMTi–Co compounds. The effect of the heat treatment temperature was to increase the magnetisation, following a slight coercivity decrease due to grain coarsening
BaFe11.6-2xMxTixO19 (M=Co2+, Zn2+, Sn2+) compounds in powder form were prepared by a sol–gel route. The materials were annealed at several temperatures and characterised. The results showed that the cationic substitutions (x) lowered the coercivity (Hci), presumably due to the decrease of the magnetocrystalline anisotropy of the doped Ba ferrites. Sn–Ti mixtures decreased Hci faster than Zn–Ti and Ti–Co; however, lower magnetisations were achieved. In this regard, BaMZn–Ti showed slightly higher magnetisation than BaMTi–Co compounds. The effect of the heat treatment temperature was to increase the magnetisation, following a slight coercivity decrease due to grain coarsening