Статья

Synthesis of molybdenum carbide superconducting compounds by microwave-plasma chemical vapor deposition

Hongyang ZhaoHubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology 1 , Wuhan, Hubei 430073, People's Republic of ChinaKang CaiHubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology 1 , Wuhan, Hubei 430073, People's Republic of ChinaZhibin MaHubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology 1 , Wuhan, Hubei 430073, People's Republic of ChinaZhenxiang ChengInstitute for Superconducting and Electronics Materials, University of Wollongong, Innovation Campus 3 , North Wollongong, NSW 2500, AustraliaTingting JiaNational Institute for Materials Science 4 , Sengen 1-2-1, Tsukuba 305-0047, JapanHideo KimuraNational Institute for Materials Science 4 , Sengen 1-2-1, Tsukuba 305-0047, JapanQiuming FuHubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology 1 , Wuhan, Hubei 430073, People's Republic of ChinaHong TaoHubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology 1 , Wuhan, Hubei 430073, People's Republic of ChinaLiwei XiongHubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology 1 , Wuhan, Hubei 430073, People's Republic of China

2018en

ABI

Аннотация

A method to synthesize molybdenum carbides has been developed based on microwave plasma treatment with methane and hydrogen mixed gases, using a microwave-plasma chemical vapor deposition device. The device framework and its mechanism are described in detail. Two-dimensional α-Mo2C has been directly synthesized by a plate-to-plate substrate holder structure with a microwave power of 920 W and a partial pressure of 20 kPa. In-situ optical emission spectroscopy was used to measure the radical types in the plasma ball during glow discharge. The as-grown α-Mo2C samples were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy and Raman spectroscopy to determine their phases, purity and chemical groups. The superconducting transition temperature was measured, and the transition temperatures of the relevant phases are discussed in detail. The results confirmed that this method is an efficient way to obtain molybdenum carbides and inspire new research interest in transition metal carbides, which have many intrinsic local properties and applications.

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Идентификаторы

DOI: 10.1063/1.5010101

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar