Preparation and Magnetic Properties of Zn-Ti Substituted Ba-ferrite Powders

G. Mendoza-Suárez; L.P. Rivas-Vázquez; A.F. Fuentes; J.I. Escalante-García; O.E. Ayala-Valenzuela; E. Valdéz. Preparation and Magnetic Properties of Zn-Ti Substituted Ba-ferrite Powders. Materials Letters (ISSN: 0167-577X). 2002, Vol. 57, p. 868-2002.

Zn–Ti-substituted barium ferrite powders were prepared by the sol–gel method and characterized. The room temperature magnetic properties were evaluated for different levels of dopant, Fe/Ba ratios, and heat-treatment temperatures. The results showed thatMs was not very much influenced by the substitution level up to 0.6 at.%. Contrarily, Hci did show a marked decrease,
owing to the reduction of the magnetocrystalline anisotropy of theBaMphase. On the other hand, an excess of Ba led to the decrease of Ms and the increase of Hci. Additionally, Zn–Ti substitutions were effective in decreasing crystallite sizes below 100 nm.