1. Structure and 3/7-like Magnetization Plateau of Layered Y2Cu7(TeO3)6Cl6(OH)2 Containing Diamond Chains and Trimers
- Author
-
Zhengcai Xia, Xia Jiang, Junfeng Wang, Zhongwen Ouyang, X. Y. Yue, Xiaochen Liu, and Zhenxing Wang
- Subjects
010405 organic chemistry ,Chemistry ,Diamond ,Triclinic crystal system ,engineering.material ,010402 general chemistry ,01 natural sciences ,Magnetic susceptibility ,0104 chemical sciences ,Magnetic field ,law.invention ,Inorganic Chemistry ,Crystallography ,Magnetization ,law ,Lattice (order) ,engineering ,Antiferromagnetism ,Condensed Matter::Strongly Correlated Electrons ,Physical and Theoretical Chemistry ,Electron paramagnetic resonance - Abstract
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 group P1. The magnetic ions constitute a two-dimensional layered lattice with a novel topological structure in which the Cu4 clusters make up distorted diamond chains along the a axis and these chains are connected by the Cu3 trimers. The magnetic susceptibility and specific heat measurements show that the compound is antiferromagnetically ordered at TN = 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 with g = 2.15 obtained from ESR. The possible mechanism for the magnetization plateau is discussed.
- Published
- 2019