Determination of the predominant type of stacking fault in cobalt by nuclear magnetic resonance and electron microscopy

Consideration of the effect on the nuclear magnetic resonance spectrum of the differences in interplanar spacing of the various close-packed layers in cobalt stacking faults had previously indicated the stacking faults to be predominantly intrinsic. This identification has been confirmed in the present investigation by two independent methods, (1) the effect of cold-working on the N.M.R. spectrum, and (2) application of the theory of stacking-fault fringe contrast to electron micrographs.