Improvement of the magnetic properties of highly porous open-celled magnets


Topal U., Bakan H. İ.

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, cilt.31, sa.5, ss.783-787, 2011 (SCI-Expanded) identifier identifier

Özet

In the present study, we have investigated the influence of B2O3 addition on structural and magnetic properties of hard magnetic BaFe12O19 foams. In the presence of B2O3 open-celled foams were successfully fabricated at a calcination temperature of 1300 degrees C. Magnetization values have been improved by 50% with B2O3-addition. Remanence magnetization (M-R), specific magnetization at 1.5 T (M-S) and coercive field (H-c) values were obtained to be 32.7 emu/g, 63.0 emu/g and 2100 Oe, respectively for the 0.5 wt% B2O3 containing foams having 30 pores/in. Foams with these magnetic properties have the potential to be used in different areas of technology as permanently magnetic materials. (c) 2010 Elsevier Ltd. All rights reserved.