Semiconducting and magnetic properties of FeS-derived compounds (C2H8N2)xFeS and Ax(C2H8N2)yFeS (A = Li, Na)

Hui Zheng; Changhao Ding; Han-Shu Xu; Lulu Tang; Huimin Liu; Lianwei Wei; Kaibin Tang

doi:10.1039/d1dt02108g

Semiconducting and magnetic properties of FeS-derived compounds (C₂H₈N₂)_xFeS and A_x(C₂H₈N₂)_yFeS (A = Li, Na)

Dalton Trans. 2021 Sep 28;50(37):13052-13058. doi: 10.1039/d1dt02108g.

Authors

Hui Zheng¹, Changhao Ding², Han-Shu Xu², Lulu Tang¹, Huimin Liu¹, Lianwei Wei¹, Kaibin Tang^{1

2}

Affiliations

¹ Department of Chemistry, University of Science and Technology of China, Hefei, 230026, People's Republic of China. kbtang@ustc.edu.cn.
² Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, People's Republic of China. xhs@ustc.edu.cn.

PMID: 34581350
DOI: 10.1039/d1dt02108g

Abstract

Several FeS-derived intercalated compounds (C₂H₈N₂)_xFeS and A_x(C₂H₈N₂)_yFeS (A = Li, Na) were successfully synthesized via a novel ammonothermal method. The powder X-ray diffraction (XRD) measurements reveal that the FeS intercalated samples have the same tetragonal crystal structure as the parent FeS. After intercalation, these three as-synthesized samples do not show superconductor behavior, which is confirmed by the magnetization and the electrical resistivity measurements. (C₂H₈N₂)_xFeS exhibits paramagnetic semiconductor behavior, while the newly synthesized A_x(C₂H₈N₂)_yFeS (A = Li, Na) shows antiferromagnetic semiconductor behavior. The absence of superconductivity in these FeS-derived compounds should be closely related to the iron vacancies in the FeS layer.