Home › Forums › Hyperfine course › electric quadrupole interaction › case studies / symmetry – task 1 › Rotation axes in Fe4N This topic has 0 replies, 1 voice, and was last updated 1 month ago by rkolesni. Viewing 1 post (of 1 total) Author Posts March 18, 2025 at 12:47 am #6482 rkolesniParticipant Fe-I: three four-fold axes, hence EFG tensor is zero Fe-II: a four-fold and two two-fold axes, so the PAS is defined by them and η=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