Non-collinear long-range magnetic ordering in HgCr2S4
| dc.creator | Chapon, L. C. | |
| dc.creator | Radaelli, P. G. | |
| dc.creator | Hor, Y. S. | |
| dc.creator | Telling, M. T. F. | |
| dc.creator | Mitchell, J. F. | |
| dc.date | 2006-08-01 | |
| dc.date | 2006-08-11 | |
| dc.date.accessioned | 2026-07-07T07:19:29Z | |
| dc.date.available | 2026-07-07T07:19:29Z | |
| dc.description | The low-temperature magnetic structure of \HG has been studied by high-resolution powder neutron diffraction. Long-range incommensurate magnetic order sets in at T$_N\sim$22K with propagation vector \textbf{k}=(0,0,$\sim$0.18). On cooling below T$_N$, the propagation vector increases and saturates at the commensurate value \textbf{k}=(0,0,0.25). The magnetic structure below T$_N$ consists of ferromagnetic layers in the \textit{ab}-plane stacked in a spiral arrangement along the \textit{c}-axis. Symmetry analysis using corepresentations theory reveals a point group symmetry in the ordered magnetic phase of 422 (D$_4$), which is incompatible with macroscopic ferroelectricity. This finding indicates that the spontaneous electric polarization observed experimentally cannot be coupled to the magnetic order parameter. | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0608031 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0608031 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/114644 | |
| dc.subject | Materials Science | |
| dc.title | Non-collinear long-range magnetic ordering in HgCr2S4 | |
| dc.type | text |