By Topic

Magnetic aftereffects in hexagonal ferrites with BaO·9Fe2O3 stoichiometric initial composition

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Hernandez-Gomez, P. ; Dept. de Electr. y Electron., Valladolid Univ., Spain ; de Francisco, C. ; Munoz, J.M. ; Alejos, O.
more authors

We have measured the relaxation of the initial magnetic permeability after sample demagnetization, in the temperature range 80 K < T < 420 K, in polycrystalline barium hexaferrites with a Ba:Fe ratio in the initial composition of 1:18 corresponding to stoichiometric W phase. The materials were sintered under different temperature and oxygen pressure conditions. The results represented by isochronal curves show the existence of up to four relaxation processes. Additional thermogravimetric and X-ray diffraction studies reveal the successive formation of M, X, and W hexagonal phases with the increase of the sintering temperature. In this framework, we ascribe the relaxation processes to the progressive increase of ferrous cations in the different sites within the hexagonal lattice

Published in:

Magnetics, IEEE Transactions on  (Volume:38 ,  Issue: 5 )