- By:
- Yang, Junjie; Matsuda, Masaaki ; Tyson, Trevor; Young, Joshua; Ratcliff, William; Gao, Yunpeng; Obeysekera, Dimuthu; Guo, Xiaoyu; Owen, Rachel; Zhao, Liuyan; Cheong, Sang-Wook
- Journal Name:
- Advanced Science
- Page Number:
- 2402048
- Volume:
- TBD
- Publication Date:
- July 26, 2024
- View DOI Listing:
- https://doi.org/10.1002/advs.202402048
Abstract
Ferro-rotational (FR) materials, renowned for their distinctive material functionalities, present challenges in the growth of homo-FR crystals (i.e., single FR domain). This study explores a cost-effective approach to growing homo-FR helimagnetic RbFe(SO4)2 (RFSO) crystals by lowering the crystal growth temperature below the TFR threshold using the high-pressure hydrothermal method. Through polarized neutron diffraction experiments, it is observed that nearly 86% of RFSO crystals consist of a homo-FR domain. Notably, RFSO displays remarkable stability in the FR phase, with an exceptionally high TFR of ≈573 K. Furthermore, RFSO exhibits a chiral helical magnetic structure with switchable ferroelectric polarization below 4 K. Importantly, external electric fields can induce a single magnetic domain state and manipulate its magnetic chirality. The findings suggest that the search for new FR magnets with outstanding material properties should consider magnetic sulfates as promising candidates.
