FIRST ORDER MAGNETIC TRANSITION, MAGNETIC STRUCTURE AND VACANCY DISTRIBUTION IN Fe2P R. WÄPPLING, L. HÄGGSTRÖM, T. ERICSSON, S. DEVANARAYANAN, E. KARLSSON, B. CARLSSON and S. RUNDQVIST J. Phys. Colloques, 35 C6 (1974) C6-597-C6-601 DOI: 10.1051/jphyscol:19746128