J. Phys. IV France 07 (1997) C1-323-C1-324
Magnetic Properties of SrO.nFe2O3 Powder Synthesized by Self-Combustion ProcessE. Otsuki and H. Matsuzawa
Materials Development Laboratory, Tokin Corp., 6-7-1 Koriyama, Taihaku-ku, Sendai 982, Japan
SrO.nFe2O3 (n=1-6) powders were attempted to be synthesized by glycine nitrate process, and their crystal structure and magnetic properties were investigated. The powders prepared in a beaker were mixtures of α-Fe2O3 and Sr(NO3)2, which could be transformed to M-phase with the coercivity of 7kOe by heat-treatment. Spray roasting process can afford to produce M-phase directly, which shows σ, HcJ=5.3kOe. The difference of coercivity by the preparation procedures can be attributed to grain size.
© EDP Sciences 1997