Physical properties of quaternary compounds Gd2CoAl4T2 (T= Si, Ge) single crystals

doi:10.1007/s11467-018-0870-3

Frontiers of Physics

2019, Vol. 14

Issue (2): 23502 https://doi.org/10.1007/s11467-018-0870-3

本期目录

Physical properties of quaternary compounds Gd₂CoAl₄T₂ (T= Si, Ge) single crystals

Kaijian Huang¹, Yuanshuai Sun², Shanshan Sun², Xiao Zhang³(

), Hechang Lei²(

)

¹. College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
². Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China
³. State Key Laboratory of Information Photonics and Optical Communications & School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China

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Abstract：

We have synthesized and investigated physical properties of two new quaternary compounds Gd₂CoAl₄T₂ (T= Si, Ge) single crystals, which are isostructural to Tb₂NiAl₄Ge₂ and Er₂CoAl₄Ge₂. The most important structural feature of these materials is the anti-CaF₂-type CoAl₄T₂ slabs. These materials show metallic behavior below 300 K and there is a long-range antiferromagnetic (AFM) transition appearing at 20 and 27 K for Gd₂CoAl₄Ge₂ and Gd₂CoAl₄Si₂, respectively. Resistivity and heat capacity measurements also confirm these bulk AFM transitions. Further analysis indicates that this long-range antiferromagnetism should result from the magnetic interaction between local moments of Gd³⁺ ions.

Key words： magnetic materials rare earth compounds single crystal growth

收稿日期: 2018-10-02 出版日期: 2018-11-29

Corresponding Author(s): Xiao Zhang,Hechang Lei

引用本文:

. [J]. Frontiers of Physics, 2019, 14(2): 23502.
Kaijian Huang, Yuanshuai Sun, Shanshan Sun, Xiao Zhang, Hechang Lei. Physical properties of quaternary compounds Gd₂CoAl₄T₂ (T= Si, Ge) single crystals. Front. Phys. , 2019, 14(2): 23502.

链接本文:

https://academic.hep.com.cn/fop/CN/10.1007/s11467-018-0870-3
https://academic.hep.com.cn/fop/CN/Y2019/V14/I2/23502

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