PARTICLE SIZE AND MAGNETIC PROPERTIES OF BaFe12O19 PREPARED BY THE ORGANOMETALLIC PRECURSOR METHOD M. Vallet, P. Rodriguez, X. Obradors, A. Isalgué, J. Rodriguez and M. Pernet J. Phys. Colloques, 46 C6 (1985) C6-335-C6-338 DOI: 10.1051/jphyscol:1985661