Abstract
Stoichiometric highly crystalline δ-MoN was obtained by in situ nitridation reaction under high pressure of 10 GPa. We developed a nitrogen source usable for in situ nitridation reaction. The high-pressure cell used in this study was composed of Mo2N powder (layer 1) and a mixture of Mo2N and metallic Ni powders (layer 2, the nitrogen source), where a gas-permeable separator (a thin layer of boron nitride powder) was placed between the layers. At high temperature of 1300 K, Mo2N reacts with Ni metal in layer 2 to form less nitrogen-containing phase MoNixNy (x ∼ 0.5, y ∼ 0.2) and nitrogen, where the nitrogen moved into layer 1 and reacted with Mo2N. X-ray diffraction, electron microprobe analysis, and magnetic measurements demonstrated the formation of stoichiometric δ-MoN with superconductive transition temperature (Tc) as high as 14 K. This in situ nitridation method using the novel nitrogen source is versatile for preparation of other nitrides under high pressure.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
