| Issue |
J. Phys. IV France
Volume 07, Number C1, Mars 1997
7th INTERNATIONAL CONFERENCE ON FERRITES
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|
|---|---|---|
| Page(s) | C1-315 - C1-316 | |
| DOI | https://doi.org/10.1051/jp4:19971124 | |
7th INTERNATIONAL CONFERENCE ON FERRITES
J. Phys. IV France 07 (1997) C1-315-C1-316
DOI: 10.1051/jp4:19971124
1 Institut für Werkstoffe der Elektrotechnik, Aachen University of Technology, Templergraben 55, 52056 Aachen, Germany
2 Gemeinschaftslabor für Elektronenmikroskopie, Aachen University of Technology, Templergraben 55, 52056 Aachen, Germany
3 Institut für Festkörperforschung, Forschungszentrum Jülich, Postfach 1913, 52428 Jülich, Germany
© EDP Sciences 1997
J. Phys. IV France 07 (1997) C1-315-C1-316
DOI: 10.1051/jp4:19971124
Effects of Variations in Stoichiometry on M-Type Hexaferrites
C. Sürig1, D. Bonnenberg1, K.A. Hempel1, P. Karduck2, HJ. Klaar2 and Ch. Sauer31 Institut für Werkstoffe der Elektrotechnik, Aachen University of Technology, Templergraben 55, 52056 Aachen, Germany
2 Gemeinschaftslabor für Elektronenmikroskopie, Aachen University of Technology, Templergraben 55, 52056 Aachen, Germany
3 Institut für Festkörperforschung, Forschungszentrum Jülich, Postfach 1913, 52428 Jülich, Germany
Abstract
Barium hexaferrite particles prepared by sol-gel technique yield best magnetic characteristics if a large barium surplus is used. Therefore, the powder sample has to be etched after the annealing process in order to get samples without intermediate phases. The used temperatures below 900°C and times shorter than 1h cause nanocrystalline hexaferrite particles with a specific saturation magnetization above 700 Acm2/g and a coercivity up to 470 kA/m.
© EDP Sciences 1997