Magnetic properties of Zn-Sn-substituted Ba-ferrite powders prepared by ball milling

• Published in: Materials research bulletin 2001-12, Vol.36 (15), p.2597-2603
• Main Authors: Mendoza-Suárez, G, Johal, K.K, Mancha-Molinar, H, Escalante-Garcı́a, J.I, Cisneros-Guerrero, M.M
• Format: Article
• Language: English
• Subjects: A. Oxides; C. X-ray diffraction; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; D. Magnetic properties; Domain effects, magnetization curves, and hysteresis; Exact sciences and technology; Magnetic properties and materials; Magnetization curves, hysteresis, Barkhausen and related effects; Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects; Materials science; Materials synthesis; materials processing; Physics; Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation
• ISSN: 0025-5408; 1873-4227
• DOI: 10.1016/S0025-5408(01)00751-6

The present investigation reports the preparation of BaFe 12−2xZn xSn xO 19 ferrite powders via ball milling and subsequent heat treatment. Starting powders were milled during 50 and 100 h, and then heat treated at 950 and 1000°C to induce crystallization and reaction of the starting materials. XRD results showed that it is possible to obtain single-phase barium ferrite powders if processing conditions are carefully chosen. The powders were also characterized for magnetic properties, namely saturation magnetization and intrinsic coercivity. It was found that coercivity could easily be controlled by varying the dopants content, while maintaining a relatively high magnetisation.