| Yb3Cu9(OH)19Cl8 单晶的生长和低温磁性研究 |
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| 引用本文： | 余振伟,梁慧,王义炎,孙学峰,李秋菊.Yb3Cu9(OH)19Cl8 单晶的生长和低温磁性研究[J].低温物理学报,2023(6):304-310. |
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| 作者姓名： | 余振伟 梁慧 王义炎 孙学峰 李秋菊 |
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| 作者单位： | 安徽大学材料科学与工程学院, 合肥230601;;安徽大学物质科学与信息技术研究院, 合肥230601;;安徽大学物理与光电工程学院, 合肥230601 |
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| 基金项目： | 安徽省自然科学基金(批准号:2108085MA16,2108085QA22), 安徽省教育厅重点项目(批准号:KJ2020A0013) 和国家自然科学基金(批准号:12274388,12104010,52102333,12104011) |
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| 摘 要： | 本文介绍了新型kagomé 晶格化合物 Yb3Cu9 (OH)19Cl8 单晶的生长及磁性质研究. 利用水热法制备了高品质的 Yb3Cu9 (OH)19Cl8 单晶,X 射线衍射的精修结果表明,Cu2+ 离子在ab 面内形成kagomé 结构,Yb3+ 离子处在kagomé 六角晶格的中心. 磁化率结果表明 Yb3Cu9 (OH)19Cl8 在温度低至2 K 仍没有磁有序转变, 表现出明显的顺磁行为. 居里-外斯拟合结果显示, 磁性离子间具有强的反铁磁耦合相互作用. 温度低至2 K 的比热曲线上没有明显的磁相变行为的出现, 而是表现出典型的肖特基特征
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| 关 键 词： | 水热法 自旋液体 磁化率 比热 |
Single Crystal Growth and Low Temperature Magnetic Properties of Yb3Cu9(OH)19Cl8 |
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| YU Zhenwei,LIANG Hui,WANG Yiyan,SUN Xuefeng,LI Qiuju.Single Crystal Growth and Low Temperature Magnetic Properties of Yb3Cu9(OH)19Cl8[J].Chinese Journal of Low Temperature Physics,2023(6):304-310. |
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| Authors: | YU Zhenwei LIANG Hui WANG Yiyan SUN Xuefeng LI Qiuju |
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| Institution: | Schoolof Materials Science and Engineering , Anhui University , Hefei 230601, P . R . China ;;Instituteof Physical Science and Information Technology , Anhui University , Hefei 230601, P . R . China ;; Schoolof Physics and Optoelectronic engineering , Anhui University , Hefei 230601, P . R . China |
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| Abstract: | The single crystal growth and magnetic properties of a new kagomé lattice compound Yb3Cu9 (OH)19Cl8 are reported. High quality Yb3Cu9 (OH)19Cl8 single crystals were prepared by hydrothermal method. The refinements of powder X-ray diffraction show that Yb3Cu9 (OH)19Cl8 forms a kagomé-Cu2+ structure within the ab plane, with Yb3+ ions in the center of hexagonal lattice of the kagomé layer. The temperature dependence of magnetic susceptibility shows obvious paramagnetic behavior without magnetic transition with lowering temperature down to 2 K. The Curie-Weiss fitting indicates Yb3Cu9 ( OH )19Cl8 has strong antiferromagnetic coupling interactions. Low-temperature specific heat does not show any magneticphasetransitiondownto2 K, with typical Schottky anomaly at low temperatures. |
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| Keywords: | Hydrothermal method Spin liquid Magnetic susceptibility Specific heat |
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