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Published on: December 29, 2016
Synthesis, structure and physical properties of the new layered oxyselenides Bi2LnO4Cu2Se2 (Ln = rare earth)
Shugang Tan1, Chenhao Gao1, Cao Wang1
1School of Physics and Optoelectronic Engineering, 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.
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