New Gd-based magnetic compound GdPt2B with a chiral crystal structure
New Gd-based magnetic compound GdPt2B with a chiral crystal structure
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具有手性晶体结构的新型钆基磁性化合物GdPt2B
DOI：
10.1103/physrevmaterials.6.104412
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发表时间：
2022
影响因子：
3.4
通讯作者：
Aoki Dai
中科院分区：
文献类型：
--
作者：
Sato Yoshiki J.;Manako Hikari;Homma Yoshiya;Li Dexin;Okazaki Ryuji;Aoki Dai
在此，我们报告了一种具有手性晶体结构的新型钆基磁性化合物的发现。 X射线衍射和化学成分分析揭示了a型晶体结构（空间群）。此外，我们还成功地使用直拉法生长了单晶。磁化测量和居里-魏斯分析表明，铁磁相互作用占主导地位。在 87 K 时，电阻率、磁化率和比热的温度依赖性发生了明显的转变。磁相图由场极化铁磁区域和磁有序区域组成，类似于已知的手性螺旋磁体。此外，磁化率测量揭示了在垂直于螺杆轴的磁场中磁有序相内可能存在的自旋重新取向。结果表明，这是研究稀土手性化合物中铁磁和反对称交换相互作用的竞争效应的合适平台。
Herein, we report the discovery of a novel Gd-based magnetic compoundwith a chiral crystal structure. X-ray diffraction and chemical composition analyses reveal a-type crystal structure (space group) for. Moreover, we successfully grew single crystals ofusing the Czochralski method. Magnetization measurements and the Curie-Weiss analysis demonstrate that the ferromagnetic interaction is dominant in. A clear transition is observed in the temperature dependence of electrical resistivity, magnetic susceptibility, and specific heat at= 87 K. The magnetic phase diagram of, which consists of a field-polarized ferromagnetic region and a magnetically ordered region, resembles those of known chiral helimagnets. Furthermore, magnetic susceptibility measurements reveal a possible spin reorientation within the magnetically ordered phase in magnetic fields perpendicular to the screw axis. The results demonstrate thatis a suitable platform for investigating the competing effects of ferromagnetic and antisymmetric exchange interactions in rare-earth-based chiral compounds.