Thin hexagonal barium hexaferrite particles synthesized using the microemulsion technique were studied. A water-in-oil reverse microemulsion system with cetyltrimethylammonium bromide (CTAB) as a cationic surfactant, n-butanol as a co-surfactant, n-hexanol as a continuous oil phase, and an aqueous phase were used. The microstructural and magnetic properties were investigated. The particles obtained were mono-domain with average particle size 280 nm. The magnetic properties of the powder were investigated at 4.2 K and at room temperature. The saturation magnetization was 48.86 emu/g and the coercivity, 2.4 x 105 A/m at room temperature. The anisotropy field Ha and magneto-crystalline anisotropy K1 were 1.4 x 106 A/m and 2.37 x 105 J/m3, respectively.
@article{arxiv.1003.2276,
title = {Structural and Magnetic Properties of Nanosized Barium Hexaferrite Powders Obtained by Microemulsion Technique},
author = {Tatyana Koutzarova and Svetoslav Kolev and Kornely Grigorov and Chavdar Ghelev and Andrzej Zaleski and Robert E. Vandenberghe and Marcel Ausloos and Catherine Henrist and Rudi Cloots and Ivan Nedkov},
journal= {arXiv preprint arXiv:1003.2276},
year = {2010}
}