MAGNETIC STRUCTURE AND MAGNETOSTRICTION OF EPITAXIAL Er FILMS J. A. Borchers, G. Nieuwenhuys, M. B. Salamon, C. P. Flynn, R. Du, R. W. Erwin et J. J. Rhyne J. Phys. Colloques, 49 C8 (1988) C8-1685-C8-1686 DOI: 10.1051/jphyscol:19888764