Metal-Spinel Composites (M0xFe01-x)α-(MyFe3-y)1-α with M=Co, Ni Synthesis and Physical Properties S. Läkamp, T. Bouakham et G. Pourroy J. Phys. IV France, 07 C1 (1997) C1-541-C1-542 DOI: 10.1051/jp4:19971222