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