Paske Terry, Guan Yingdong, Wang Chaoguo, Moore Curtis, Mao Zhiqiang, Gui Xin
Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States.
Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16801, United States.
Inorg Chem. 2024 Feb 26;63(8):3648-3655. doi: 10.1021/acs.inorgchem.3c01850. Epub 2024 Feb 14.
We report the crystal growth and characterization of a rare-earth-containing material, DyPtSb. This compound possesses a similar structure to the previously reported YPtGe, but it lacks two layers of Pt atoms. Crystallographic disorder was found in DyPtSb. Additionally, the Dy-Dy framework was found to have both square net and triangular lattices. DyPtSb was determined to be antiferromagnetically ordered around ∼15 K while a competing antiferromagnetic sublattice also exists at lower temperature. Strong magnetic anisotropy was observed, and several metamagnetic transitions were seen in the hysteresis loops. Furthermore, the Curie-Weiss fitting revealed an unusually small effective moment of Dy, which is far below the expected value of Dy (10.65 μ). This material might provide a new platform to study the relationship between crystallographic disorder and magnetism.
我们报道了一种含稀土材料DyPtSb的晶体生长及表征。该化合物具有与先前报道的YPtGe相似的结构，但缺少两层Pt原子。在DyPtSb中发现了晶体学无序。此外，发现Dy-Dy框架同时具有方形网和三角形晶格。DyPtSb在约15 K附近被确定为反铁磁有序，而在较低温度下也存在一个竞争的反铁磁子晶格。观察到强磁各向异性，并且在磁滞回线中看到了几个变磁转变。此外，居里-外斯拟合揭示了Dy的有效磁矩异常小，远低于Dy的预期值（10.65 μ）。这种材料可能为研究晶体学无序与磁性之间的关系提供一个新平台。
