STRUCTURAL AND MAGNETIC INVESTIGATIONS ON (Mn, Co)-OLIVINES E. Untersteller, W. Treutmann, E. Hellner, P. Schweiss, G. Heger et S. Hosoya J. Phys. Colloques, 49 C8 (1988) C8-909-C8-910 DOI: 10.1051/jphyscol:19888413