MAGNETIC BEHAVIOR OF Co2+ IONS IN SYNTHETIC MINERALS RELATED TO VIVIANITE AND LUDLAMITE J. L. Pizarro, L. Lezama, G. Villeneuve, M. I. Arriortua et T. Rojo J. Phys. Colloques, 49 C8 (1988) C8-2063-C8-2064 DOI: 10.1051/jphyscol:19888935