Title :
Magnetic properties of substituted barium ferrite powders
Author_Institution :
Dept. of Electrotechnol., Slovak Univ. of Technol., Bratislava
fDate :
3/1/1994 12:00:00 AM
Abstract :
Hexagonal barium ferrites were prepared using the citrate method. Cobalt and titanium were added in the amounts x from 0.2 to 1.1 ion /f.u. related to the formula BaCoxTixFe12-2x O19. The heat treatment has been applied in three steps of 550°C/5 hrs, 850°C/2 hrs and 1100°C/2 hrs. The following magnetic properties have been achieved: Hc~80 kA/m, Js -120×10-6Tkg-1m3, and Jr-60×10-6 Tkg-1m3 in the composition for which x is equal to 0.5 ion/f.u. The magnetic parameters have been measured by the vibration magnetometer
Keywords :
barium compounds; coercive force; ferrites; heat treatment; magnetic impurity interactions; magnetic properties of fine particles; powders; remanence; BaCoxTixFe12-2xO19; BaCoTiFe12O19; coercivity; ferrites; heat treatment; remanent polarisation; saturation polarisation; Barium; Cobalt; Ferrites; Heat treatment; Iron; Magnetic properties; Magnetometers; Powders; Titanium; Vibration measurement;
Journal_Title :
Magnetics, IEEE Transactions on
