ANALYSIS OF MAGNETIC DOMAIN STRUCTURES IN CoCr SPUTTERED FILMS USING DIFFERENTIAL PHASE CONTRAST ELECTRON MICROSCOPY J. N. Chapman, D. J. Rogers and J. P. C. Bernards J. Phys. Colloques, 49 C8 (1988) C8-1965-C8-1966 DOI: 10.1051/jphyscol:19888890