IR Studies of the Phase Transformation of Fe2O3 → Fe3O4by Magnetomechanical Activation I. Jacyna-Onyszkiewicz, M. Grunwald-Wyspianska et W.A. Kaczmarek J. Phys. IV France, 07 C1 (1997) C1-615-C1-616 DOI: 10.1051/jp4:19971255