Enhanced nuclear order in HoVO4revisited. I. A nuclear orientation study

Publisher Website
Google Scholar
Abstract
HoVO4 is a tetragonal enhanced nuclear magnet in which the 165Ho nuclear spins (I=7/2) become ordered in a planar antiferromagnetic configuration below 5 mK. The ordered state has previously been established by a nuclear orientation study using 166mHo (I=7), but this was based on an analysis confined to rank-2 tensors. The authors report a more detailed investigation using both rank-2 and rank-4 statistical tensor analysis of the anisotropy of the 712 and 810 keV gamma -ray emissions. The results are quantitatively consistent with a model of nuclear spins ordered in the a-a' plane, in which pinning of the spins by the electronic magnetic moments of impurity ions (Er3+) plays a major role in the formation of domains. This provides a convincing explanation of the differences between experimental results and the predictions of mean-field theory.

This publication has 14 references indexed in Scilit: