Layered quaternary chalcogenides KMgCuSe2 and KMgCuTe2 with paramagnetic semiconducting behavior

Zhongnan Guo,Zhao Liu,Jun Deng,Jiawei Lin,Zijing Zhang,Xue Han,Fan Sun,Wenxia Yuan

Journal of Alloys and Compounds（2021）

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摘要

•Two new chalcogenides KMgCuSe2 and KMgCuTe2 were synthesized.•They adopt TlCr2Si2-type structure with edge-sharing tetrahedral layers separated by K+.•The band gaps are measured to be 1.26 and 1.36 eV for KMgCuSe2 and KMgCuTe2.•KMgCuTe2 is paramagnetic with small effect moment as 0.31 μB per Mg/Cu.

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关键词

Mg chalcogenide,Layered structure,Crystal growth,Semiconductors,X-ray diffraction

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