Structure and 3/7-like Magnetization Plateau of Layered Y2Cu7(TeO3)6Cl6(OH)2 Containing Diamond Chains and Trimers
Structure and 3/7-like Magnetization Plateau of Layered Y2Cu7(TeO3)6Cl6(OH)2 Containing Diamond Chains and Trimers
复制标题
含金刚石链和三聚体的层状Y2Cu7(TeO3)(6)Cl-6(OH)(2)的结构和类3/7磁化平台
DOI：
10.1021/acs.inorgchem.9b00566
复制
发表时间：
2019
影响因子：
4.6
通讯作者：
Xia Zhengcai
中科院分区：
文献类型：
--
作者：
Liu Xiaochen;Ouyang Zhongwen;Yue Xiaoyu;Jiang Xia;Wang Zhenxing;Wang Junfeng;Xia Zhengcai
采用传统的水热法合成了一种新的自旋为1/2的反铁磁体Y_2Cu_7（TeO_3）_6Cl_6（OH）_2。该化合物在三斜晶系中结晶，空间群为P1 <$。磁性离子构成了一个二维层状晶格，具有新颖的拓扑结构，其中Cu 4团簇沿轴向形成沿着扭曲的金刚石链，这些链通过Cu 3三聚体连接。磁化率和比热测量表明，该化合物在TN = 4.1K时为反铁磁有序。电子自旋共振（ESR）数据进一步支持这种反铁磁有序。磁化曲线在0.2T处呈现场致变磁转变，随后在从7 T到至少55 T的宽磁场范围内出现磁化平台，其对应于从ESR获得的g = 2.15的饱和磁化强度的3/7。讨论了磁化平台的可能机制。
We have synthesized a new spin-1/2 antiferromagnet, Y2Cu7(TeO3)6Cl6(OH)2, via a traditional hydrothermal method. This compound crystallizes in the triclinic crystal system with space groupP1̅. The magnetic ions constitute a two-dimensional layered lattice with a novel topological structure in which the Cu4clusters make up distorted diamond chains along theaaxis and these chains are connected by the Cu3trimers. The magnetic susceptibility and specific heat measurements show that the compound is antiferromagnetically ordered atTN= 4.1 K. This antiferromagnetic ordering is further supported by electron spin resonance (ESR) data. The magnetization curve presents a field-induced metamagnetic transition at 0.2 T, followed by a magnetization plateau within a wide magnetic field range from 7 T to at least 55 T, which corresponds to 3/7 of the saturated magnetization withg= 2.15 obtained from ESR. The possible mechanism for the magnetization plateau is discussed.