A Family of Quasi-Two-Dimensional Honeycomb Lattice Magnets RE2Te4O11 (RE = Gd-Er and Yb) with Large Interlayer Distances.

IF 4.7 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2025-09-23 DOI:10.1021/acs.inorgchem.5c02709

Ritao Huang,Jin Zhou,Yi Yang,Qingyuan Zeng,Jingxin Li,Langsheng Ling,Wei Tong,Zhaoming Tian

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引用次数: 0

Abstract

Two-dimensional rare earth (RE)-based honeycomb lattice magnets provide a fertile platform for exploring exotic magnetic ground states in view of reduced spatial dimensionality and anisotropic exchange interactions, while the reported 2D honeycomb lattice materials are quite limited. Herein, we report a family of quasi-two-dimensional layered RE-based honeycomb lattice magnets RE2Te4O11 (RE = Gd-Er and Yb), where the magnetic honeycomb layers are well separated by nonmagnetic TeO4 polyhedra with large interlayer distances of 8.353-8.452 Å. Magnetic susceptibility characterizations reveal that all synthesized RE2Te4O11 (RE = Gd-Er and Yb) compounds exhibit dominant antiferromagnetic (AFM) interactions; three RE2Te4O11 (RE = Gd, Tb, and Dy) family members show magnetic transitions with Néel temperatures (TN) of 1.97, 3.61, and 2.52 K, respectively. For Tb2Te4O11, a field-induced spin-flop transition is observed below TN = 3.61 K in the isothermal magnetization M(B) curves. Based on the analysis of the magnetocaloric effect (MCE), a crossover behavior is observed from the inverse MCE at low fields (ΔB < 1.8 T) to conventional MCE at high fields (ΔB > 1.8 T) below the TN in Tb2Te4O11; this is in contrast to the conventional MCE in all measured field regions in other RE2Te4O11 compounds.

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一类大间距准二维蜂窝晶格磁体RE2Te4O11 （RE = Gd-Er和Yb）

二维稀土（RE）蜂窝晶格磁体由于空间维数降低和各向异性交换相互作用，为探索奇异磁基态提供了丰富的平台，而目前报道的二维蜂窝晶格材料相当有限。本文报道了一类准二维层状RE基蜂窝晶格磁体RE2Te4O11 (RE = Gd-Er和Yb)，其中磁性蜂窝层被非磁性TeO4多面体很好地隔开，层间距离为8.353-8.452 Å。磁化率表征表明，所有合成的RE2Te4O11 （RE = Gd-Er和Yb）化合物均表现出显性的反铁磁相互作用；三种RE2Te4O11 （RE = Gd, Tb, Dy）族成员在n温度（TN）分别为1.97,3.61和2.52 K时发生磁跃迁。对于Tb2Te4O11，在TN = 3.61 K以下的等温磁化M(B)曲线上观察到场致自旋跃迁。基于对磁热效应（MCE）的分析，在Tb2Te4O11中观察到从低场（ΔB < 1.8 T）的逆MCE到低于TN的高场（ΔB > 1.8 T）的常规MCE的交叉行为；这与其他RE2Te4O11化合物中所有测量区域的常规MCE形成对比。

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.