Fe4N and PAS homepage › Forums › Fe4N and PAS › Fe4N and PAS This topic has 0 replies, 1 voice, and was last updated 1 year, 5 months ago by sjoukjeveyt. Viewing 1 post (of 1 total) Author Posts February 17, 2021 at 1:03 pm #3431 Score: 0 sjoukjeveytParticipant I find this a difficult exercise. * for Fe-II I’d say there are multiple four-fold axes, so EFG=0 * for Fe-I I’d say there is 1 four-fold axis and multiple two-fold axes, so the four-fold axis is the z-axis of the principle axis system and eta=0 Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In