Magnetic studies of Zn–Ti-substituted barium hexaferrites prepared by mechanical milling

• Published in: Materials letters Vol. 59; no. 1; pp. 26 - 31
• Main Authors: González-Angeles, A., Mendoza-Suarez, G., Grusková, A., Papánová, M., Slama, J.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2005
• Subjects: Magnetic properties; Mössbauer spectra; Zn–Ti doped Ba-ferrite; 33.45+x; 75.50.-y; Mössbauer spectra; 74.25Ha; Magnetic properties; Zn–Ti doped Ba-ferrite
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2004.09.012

Barium hexaferrite fine particles with composition BaFe 12−2 x Zn x Ti x O 19 (0≤ x≤0.6) were obtained by mechanical milling. The effect of Zn–Ti substitution on the magnetic properties and microstructure of the powders were investigated by Mössbauer spectroscopy, XRD, vibrating sample magnetometry (VSM), scanning electron microscopy (SEM) and thermomagnetic analysis. The particle size reached a minimum at x=0.2 and then increased with the substitution level, reaching a value of 102.96 nm. Mössbauer studies revealed that Zn 2+ ions replace Fe 3+ ions on tetrahedral sites (4f 1), while Ti 4+ preferred the octahedral sites (4f 2 and 2a).