Low-Temperature Solid State Synthesis and Characterization of Superconducting Vanadium Nitride
Liang-Biao Wang1** , Zheng-Song Lou1 , Ke-Yan Bao2** , Wei-Qiao Liu1 , Quan-Fa Zhou1**
1 School of Chemistry and Environment Engineering, Jiangsu University of Technology, Changzhou 2130012 College of Chemistry and Pharmcy Engineering, Nanyang Normal University, Nanyang 473061
Abstract :Superconducting vanadium nitride (VN) is successfully synthesized by a solid-state reaction of vanadium pentoxide, sodium amide and sulfur in an autoclave at a relatively low temperature (240–400$^{\circ}\!$C). The obtained samples are characterized by x-ray diffraction, x-ray photoelectron spectroscopy and transmission electron microscopy. The result of the magnetization of the obtained VN product as a function of temperature indicates that the onset superconducting transition temperature is about 8.4 K. Furthermore, the possible reaction mechanism is also discussed.
收稿日期: 2016-11-12
出版日期: 2017-01-25
:
81.16.Be
(Chemical synthesis methods)
77.84.Bw
(Elements, oxides, nitrides, borides, carbides, chalcogenides, etc.)
87.64.Bx
(Electron, neutron and x-ray diffraction and scattering)
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