Cobalt Ferrite CoxFe3-xO4 (0.4 < x < 0.7) with High Coercive Fields (2000 Oe < Hc < 6000 Oe) G. Pourroy, S. Läkamp, M. Multigner, A. Hernando, J.-L. Dormann et R. Valenzuela-Monjaras J. Phys. IV France, 07 C1 (1997) C1-327-C1-328 DOI: 10.1051/jp4:19971130