Transition from an incommensurate spin density wave to a commensurate magnetic order in a triangular lattice compound Ho2PdAl6Ge4
文献类型：期刊论文
| 作者 | Wu, Hengheng1,2; Zhang, Lei1; Ren, Weijun1,2; Zhang, Qiang3; Gao, Fei1,2; An, Meng1,2; Li, Bing1,2; Zhang, Zhidong1,2 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2024-09-05 |
| 卷号 | 998页码:8 |
| 关键词 | Ho 2 PdAl 6 Ge 4 Rare-earth compound Magnetic properties Magnetic structure Spin density wave |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2024.174975 |
| 通讯作者 | Ren, Weijun(wjren@imr.ac.cn) ; Zhang, Qiang(zhangq6@ornl.gov) ; Li, Bing(bingli@imr.ac.cn) |
| 英文摘要 | Rare-earth (RE) intermetallics on a triangular lattice are promising candidates for generating interesting magnetic phases due to the complex interplay between Ruderman-Kittel-Kasuya-Yoshida (RKKY) interaction and geometrical frustration. Here we report the exotic magnetic structure of a layered compound Ho2PdAl6Ge4 with triangular lanthanide nets. Magnetization and heat capacity measurements in zero magnetic field reveal two magnetic phase transitions at TN1 = 10.8 K and TN2 = 6.0 K. Neutron powder diffraction demonstrates a commensurate antiferromagnetic phase with k1 = (0, 0, 1.5) below TN2. With increasing temperature, another incommensurate vector appears and therefore, the magnetic structure of the intermediate state is identified as an unusual incommensurate spin density wave with two propagation vectors k1 = (0, 0, 1.5) and k2 = (0.0492, 0.0492, 1.5). The magnetic moments in the intermediate state rotate continuously and form an unusual S-shaped wave arrangement in the ab plane, sharing similarities with typical cycloid and helix magnetic orders. These results identify Ho2PdAl6Ge4 as a candidate for exploring field-induced topological magnetic phases such as skyrmions, opening the way for further investigations on the family of RE2PdAl6Ge4 materials. |
| 资助项目 | Ministry of Science and Technology of China[2021YFB3501201] ; Ministry of Science and Technology of China[2020YFA0406002] ; National Natural Science Foundation of China[52071323] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001247187700001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | Ministry of Science and Technology of China ; National Natural Science Foundation of China |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Ren, Weijun; Zhang, Qiang; Li, Bing |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Neutron Sci Div, Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA |
| 推荐引用方式 GB/T 7714 | Wu, Hengheng,Zhang, Lei,Ren, Weijun,et al. Transition from an incommensurate spin density wave to a commensurate magnetic order in a triangular lattice compound Ho2PdAl6Ge4[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2024,998:8. |
| APA | Wu, Hengheng.,Zhang, Lei.,Ren, Weijun.,Zhang, Qiang.,Gao, Fei.,...&Zhang, Zhidong.(2024).Transition from an incommensurate spin density wave to a commensurate magnetic order in a triangular lattice compound Ho2PdAl6Ge4.JOURNAL OF ALLOYS AND COMPOUNDS,998,8. |
| MLA | Wu, Hengheng,et al."Transition from an incommensurate spin density wave to a commensurate magnetic order in a triangular lattice compound Ho2PdAl6Ge4".JOURNAL OF ALLOYS AND COMPOUNDS 998(2024):8. |
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来源：金属研究所
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