Abstract
The magnetic structure of tetragonal was investigated by single-crystal neutron-diffraction experiments. Below = 20 K it orders antiferromagnetically with a propagation vector of and magnetic moments of uranium ions pointing along the tetragonal axis. Weak signs of the presence of a ferromagnetic component of magnetic moment were traced out. Taking into account a group theory calculation and experimental results of magnetization and nuclear magnetic resonance, the magnetic structure is determined to be a squared-up antiferromagnetic structure, with a stacking sequence () of the ferromagnetic -plane sheets along the axis. This result highlights similar magnetic correlations in and isostructural .
- Received 6 October 2017
- Revised 9 December 2017
DOI:https://doi.org/10.1103/PhysRevB.96.214442
©2017 American Physical Society