Numéro
J. Phys. IV France
Volume 07, Numéro C1, Mars 1997
7th INTERNATIONAL CONFERENCE ON FERRITES
Page(s) C1-197 - C1-198
DOI https://doi.org/10.1051/jp4:1997173
7th INTERNATIONAL CONFERENCE ON FERRITES

J. Phys. IV France 07 (1997) C1-197-C1-198

DOI: 10.1051/jp4:1997173

Perminvar-Like Behaviour in some Hexagonal Ferrites

Z. Simsa1, R. Gerber2, V. Lewis2 and V.A.M. Brabers3

1  Institute of Physics ASCR, Cukrovarnická 10, 162 00 Praha 6, Czech Republic
2  University of Salford, M5 4WT Salford, U.K.
3  University of Technology, 5600 Eindhoven, The Netherlands


Abstract
A novel, perminvar-like behaviour of the magnetization curves in the hard direction of titanium containing bulk and thin film barium hexagonal ferrites was observed at low temperatures. The DC moments and AC susceptibilities in the 1-1000 Hz frequency range were measured by VSM and SQUID magnetometers in the easy and hard magnetic directions at temperatures from 5 to 300 K. The perminvar-like effects were explained on the basis of the reorientation of Fe2+ - Ti4+ pairs in octahedral 12k sites of the hexagonal lattice.



© EDP Sciences 1997