It Runs in the BaAl 4 Family: Relating the Structure and Properties of Middle Child Ln 2 Co 3 Ge 5 (Ln = Pr, Nd, and Sm) to its Siblings LnCo 2 Ge 2 and LnCoGe 3
It Runs in the BaAl 4 Family: Relating the Structure and Properties of Middle Child Ln 2 Co 3 Ge 5 (Ln = Pr, Nd, and Sm) to its Siblings LnCo 2 Ge 2 and LnCoGe 3
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它属于 BaAl 4 家族：将中间子 Ln 2 Co 3 Ge 5 (Ln = Pr、Nd 和 Sm) 与其兄弟姐妹 LnCo 2 Ge 2 和 LnCoGe 3 的结构和性能联系起来
DOI：
10.1021/acs.inorgchem.1c01978
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发表时间：
2021
影响因子：
4.6
通讯作者：
Chan, Julia Y.
中科院分区：
文献类型：
--
作者：
Kyrk, Trent M.;Scheifers, Jan P.;Thanabalasingam, Kulatheepan;McCandless, Gregory T.;Young, David P.;Chan, Julia Y.
BaAl4原型结构及其衍生物已被鉴定为含有几种拓扑量子材料和非中心对称超导体。以锡为助熔剂，用助熔剂生长得到了∼为3 mm×3 mm×5 mm的Ln2Co3Ge5(Ln=Pr，Nd，Sm)单晶。晶体结构与晶胞空间群C2/c中的Lu2Co3Si5结构类型同构。随温度变化的磁化强度表明，这三种化合物在30K时都有磁有序。Pr2Co3Ge5和Nd2Co3Ge5在6K附近表现出反铁磁有序前的自旋重新取向的复杂磁行为，而Sm2Co3Ge5在26K表现出明显的反铁磁行为。在此，我们介绍了Ln2Co3Ge5(Ln=Pr，Nd，Sm)的优化晶体生长、结构和物理性质。
The BaAl4prototype structure and its derivatives have been identified to host several topological quantum materials and noncentrosymmetric superconductors. Single crystals up to ∼3 mm × 3 mm × 5 mm of Ln2Co3Ge5(Ln = Pr, Nd, and Sm) are obtained via flux growth utilizing Sn as metallic flux. The crystal structure is isostructural to the Lu2Co3Si5structure type in the crystallographic space groupC2/c. The temperature-dependent magnetization indicates magnetic ordering at 30 K for all three compounds. Pr2Co3Ge5and Nd2Co3Ge5exhibit complex magnetic behavior with spin reorientations before ordering antiferromagnetically around 6 K, whereas Sm2Co3Ge5shows a clear antiferromagnetic behavior at 26 K. The structures and properties of Ln2Co3Ge5(Ln = Pr, Nd, and Sm) are compared to those of the ThCr2Si2and BaNiSn3structure types. Herein, we present the optimized crystal growth, structure, and physical properties of Ln2Co3Ge5(Ln = Pr, Nd, and Sm).