Cation distribution of titanium substituted cobalt ferrites

• Published in: Journal of alloys and compounds Vol. 488; no. 1; pp. L6 - L9
• Main Authors: Rao, K. Srinivasa, Kumar, A. Mahesh, Varma, M. Chaitanya, Choudary, G.S.V.R.K., Rao, K.H.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 20.11.2009; Elsevier
• Subjects: Cation distribution; Cobalt ferrite; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Conductivity phenomena in semiconductors and insulators; Curie temperature; Dc resistivity; Domain effects, magnetization curves, and hysteresis; Electronic transport in condensed matter; Exact sciences and technology; Low-field transport and mobility; piezoresistance; Magnetic properties and materials; Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects; Physics; Saturation magnetization; Cation distribution; Cobalt ferrite; Dc resistivity; Saturation magnetization; Curie temperature; Electrical conductivity; Curie point; Polycrystals; XRD; Lattice parameters; Ion distribution; Ferrites spinels; Chemical composition
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2009.08.086

Polycrystalline titanium substituted cobalt ferrites with general formula CoFe 2− x Ti x O 4 where x varies from 0.00 to 0.30 in steps of 0.05 have been prepared by standard ceramic method and characterized by X-ray diffraction. All the titanium containing cobalt ferrite compositions have shown TiFe 2O 5 (monoclinic) secondary phase besides spinel structure. Saturation magnetization, dc resistivity and Curie temperature studies have been made with a view of developing suitable compounds for magnetic stress sensors. Cation distribution of these materials has been proposed on the basis of magnetization and resistivity measurements and the same has been established from lattice constant calculations.