Synthesis, structure and physical properties of the new layered oxyselenides Bi2LnO4Cu2Se2 (Ln = rare earth)

Shugang Tan; Chenhao Gao; Cao Wang; Qiang Jing; Tong Zhou; Guangchao Yin; Meiling Sun; Fei Xing; Rui Cao; Yuping Sun

doi:10.1098/rsos.201078

Synthesis, structure and physical properties of the new layered oxyselenides Bi₂LnO₄Cu₂Se₂ (Ln = rare earth)

R Soc Open Sci. 2020 Oct 28;7(10):201078. doi: 10.1098/rsos.201078. eCollection 2020 Oct.

Authors

Shugang Tan¹, Chenhao Gao¹, Cao Wang¹, Qiang Jing¹, Tong Zhou¹, Guangchao Yin¹, Meiling Sun¹, Fei Xing¹, Rui Cao², Yuping Sun¹

Affiliations

¹ School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255000, People's Republic of China.
² Office of International Cooperation and Exchange, Shandong University of Technology, Zibo 255000, People's Republic of China.

Abstract

We have synthesized a new series of layered oxyselenides Bi₂LnO₄Cu₂Se₂ (Ln=Nd, Sm, Eu, Dy, Er, Yb). Their crystal structures and physical properties were studied through X-ray diffraction, electric transport measurements, bulk magnetization and first-principle calculation. All these compounds have a tetragonal structure with space group I4/mmm. They exhibit hole-type metallic behaviours which is also verified by the DFT calculation. The new Bi₂LnO₄-type block in these compounds may give people some enlightenment in synthesizing new iron-based superconductors or other layered compounds.

Keywords: band structure; layered oxyselenides; solid-state reaction.

Associated data

figshare/10.6084/m9.figshare.c.5179145