Cs2Ln3CuS8 (Ln = La-Nd, Sm-Tb): Synthesis, Crystal Structure, and Magnetic and Optical Properties

被引：4

作者：

Pomelova, Tatiana A. . ^{[1
]}

Delacotte, Charlene ^{[2
]}

Kuratieva, Natalia, V ^{[1
,3
]}

Lemoine, Pierric ^{[2
]}

Cordier, Stephane ^{[2
]}

Park, SangJun ^{[4
]}

Guizouarn, Thierry ^{[2
]}

Pelletier, Vincent ^{[2
]}

Gautier, Regis ^{[2
]}

Naumov, Nikolay G. ^{[1
]}

机构：

[1] RAS, Nikolaev Inst Inorgan Chem SB, Novosibirsk 630090, Russia

[2] Univ Rennes, Ecole Natl Super Chi Rennes, CNRS, ISCR,UMR 6226, F-35000 Rennes, France

[3] Univ Lorraine, Inst Jean Lamour, CNRS, UMR 7198, F-54011 Nancy, France

[4] Novosibirsk State Univ, Novosibirsk 630090, Russia

来源：

INORGANIC CHEMISTRY | 2023年 / 62卷 / 17期

关键词：

PHYSICAL-PROPERTIES; PLANE-WAVE; SEMICONDUCTORS; RE; SALTS; COHP; SE; GD; ER; CS;

D O I：

10.1021/acs.inorgchem.2c03447

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

This work reports the preparation of new quaternary sulfides Cs2Ln3CuS8 (Ln = La-Nd, Sm-Tb), their original crystal and electronic structures, and their magnetic properties. The sulfides were prepared using a reactive flux method from mixtures of Ln2S3 (EuS), Cs2S6, Cu2S, and S. They crystallize in a new type of structure (C2/m space group) and exhibit a layer-like crystal structure, which is a hybrid of those of the ACe2CuS6 series (A = Cs, K) and that of K2CeCu2S4. The values of the optical band gap calculated by the Kubelka-Munk equation are in the range of 1.2-2.62 eV depending on the nature of the Ln ion. The Cs2Gd3CuS8 compound displays relatively great magnetic refrigerating properties at cryogenic temperature with the mass entropy change (-Delta SM) reaching 19.5 J kg-1 K-1 at 3.5 K for Delta H = 5 T.

引用

页码：6586 / 6597

页数：12

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