Pardo-Sainz M, Cova F, Rodríguez-Velamazán J A, Puente-Orench I, Kousaka Y, Mito M, Campo J
Instituto de Nanociencia y Materiales de Aragón (CSIC - Universidad de Zaragoza) and Depto. de Física de la Materia Condensada, C/Pedro Cerbuna 12, 50009, Zaragoza, Spain.
Graduate School of Science, Osaka Metropolitan University, 1-1 Gakuencho, Sakai, Osaka, 599-8531, Japan.
Sci Rep. 2023 Jul 27;13(1):12168. doi: 10.1038/s41598-023-39284-2.
Low-temperature neutron diffraction experiments at [Formula: see text] GPa have been conducted to investigate the magnetic structures of metallic Holmium at high pressures by employing a long d-spacing high-flux diffractometer and a Paris-Edinburgh press cell inside a cryostat. We find that at [Formula: see text] GPa and [Formula: see text] K, no nuclear symmetry change is observed, keeping therefore the hexagonal closed packed (hcp) symmetry at high pressure. Our neutron diffraction data confirm that the ferromagnetic state does not exist. The magnetic structure corresponding to the helimagnetic order, which survives down to 5 K, is fully described by the magnetic superspace group formalism. These results are consistent with those previously published using magnetization experiments.
在[公式：见正文]吉帕压力下进行了低温中子衍射实验，通过在低温恒温器内使用长d间距高通量衍射仪和巴黎 - 爱丁堡压力室来研究金属钬在高压下的磁结构。我们发现，在[公式：见正文]吉帕和[公式：见正文]开尔文时，未观察到核对称性变化，因此在高压下保持六方密堆积（hcp）对称性。我们的中子衍射数据证实不存在铁磁态。对应于螺旋磁序的磁结构在低至5开尔文时仍然存在，通过磁超空间群形式完全描述。这些结果与先前使用磁化实验发表的结果一致。
