The article relates to the dispersion of single-domain BaFe12O19 particles in water. The interparticle interaction energies due to the van der Waals and magnetic dipole-dipole forces were estimated. The particle-size limit for their dispersion in water was determined.
COBISS.SI-ID: 22586663
The investigation deals with the preparation of barium hexaferrite suspensions stabilized with the addition of a surfactant, dodecylbenzyl-sulfonicacid (DBSA). It was shown that by the interplay of the DBSA solubility and its adsorption on the particles’ surfaces a stable suspension of barium hexaferrite particles with sizes up to a few 10s of nm can be prepared. Such suspensions were also proven to be suitable for electrophoretic deposition.
COBISS.SI-ID: 22766119
The variations in cation distribution within the spinel lattice were observed by the structural refinement of X-ray absorption fine structure (EXAFS). The presented study clearly shows that the distribution of the cations within the spinel lattice of the ferrite nanoparticles, and consequently their magnetic properties, are strongly affected by the synthesis method used.
COBISS.SI-ID: 23247911
This work describes the hydrothermal synthesis of monodisperse superparamagnetic particles of Ba-hexaferrite in the presence of a large excess of hydroxyl ions. Above a certain temperature, Oswald ripening occurs, which induces the bimodal grain size distribution. With appropriate surfactants, however, this process can be prevented.
COBISS.SI-ID: 22768167
Superparamagnetic maghemite nanoparticles were functionalized with 3-aminopropyl triethoxysilane (APS). The influence of the different experimental parameters, temperature, pH, and reactant concentration, on the efficiency of the APS bonding directly to the maghemite nanoparticles or after their coating with a thin layer of silica was systematically studied.
COBISS.SI-ID: 22581799