DRIVING FORCE FOR SOLID STATE AMORPHISATION IN THE Fe-B SYSTEM M.T. CLAVAGUERA-MORA, M.D. BARO, S. SURIÑACH and N. CLAVAGUERA J. Phys. Colloques, 51 C4 (1990) C4-49-C4-54 DOI: 10.1051/jphyscol:1990405