Bibliographic Details
| Title: |
Crystallographic and magnetic structure of UNi$_4$$^{11}$B |
| Authors: |
Willwater, J., Süllow, S., Reehuis, M., Feyerherm, R., Amitsuka, H., Ouladdiaf, B., Suard, E., Klicpera, M., Vališka, M., Pospíšil, J., Sechovský, V. |
| Source: |
Phys. Rev. B 103, 184426 (2021) |
| Publication Year: |
2021 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Strongly Correlated Electrons |
| More Details: |
We present an extensive powder and single-crystal neutron scattering investigation of the crystallographic structure and magnetic order of the frustrated metallic $f$-electron magnet UNi$_4$B. We carry out a full refinement of the crystallographic structure and conclude that the low-temperature lattice symmetry is orthorhombic (space group Pmm2; cell parameters: $a = 6.963(4)~\r{A}$ , $b = 14.793(9)~\r{A}$ , $c = 17.126(8)~\r{A}$). We determine the magnetically ordered structure, concluding that below $T_\mathrm{N} = 19.5~\mathrm{K}$ the material undergoes a transition into a partially ordered antiferromagnetic state. The magnetic structure is consistent with the existence of toroidal order in this material. We further test the proposal of a second magnetic transition occurring at $330~\mathrm{mK}$, concluding that the thermodynamic anomalies observed at these temperatures do not reflect modifications of the magnetic structure. Our study provides a consistent picture of the interrelationship of structural and magnetic properties in the frustrated magnet UNi$_4$B previously unresolved.
Comment: Submitted to Phys. Rev. B |
| Document Type: |
Working Paper |
| DOI: |
10.1103/PhysRevB.103.184426 |
| Access URL: |
http://arxiv.org/abs/2104.06119 |
| Accession Number: |
edsarx.2104.06119 |
| Database: |
arXiv |
