INFLUENCE OF SINTERING ATMOSPHERE ON THE MAGNETIC AFTER-EFFECT IN STRONTIUM FERRITES

Authors
HERNANDEZ P DEFRANCISCO C MUNOZ JM INIGUEZ J TORRES L ZAZO M
Citation
P. Hernandez et al., INFLUENCE OF SINTERING ATMOSPHERE ON THE MAGNETIC AFTER-EFFECT IN STRONTIUM FERRITES, Journal of magnetism and magnetic materials, 158, 1996, pp. 123-124
Citations number
9
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
158
Year of publication
1996
Pages
123 - 124
Database
ISI
SICI code
0304-8853(1996)158:<123:IOSAOT>2.0.ZU;2-6
Abstract
The relaxation of the initial permeability after sample demagnetizatio n has been measured in polycrystalline strontium ferrite samples with nominal composition SrO . 6Fe(2)O(3) (M-phase), sintered under differe nt oxygen pressures, and has been represented by isochronal curves. Ve ry different behaviours are observed. With lower oxygen pressures the isochronal spectra are similar to the curves obtained for barium ferri tes, with relaxation peaks at room temperature. In higher oxygen parti al pressures, the relaxation peaks are found at lower temperatures.