Study of bulk sintered Molybdenite (MoS2) crystal quality (structural and doping level analyses)
Abstract
Making Bulk Molybdenite (MoS2) crystal is a challenging task due to high melting point (~ 2500 K) of this covalent solid. One method to reach such a high temperature would be using Plasma Spark sintering technique to fabricate bulk samples at high pressure and vacuum level. The initial powder of MoS2sintered within graphite holder while being pressed. One could control crystallization process through setting high current flow through the cell. The synthesized bulk sample structurally analyzed through common X-ray diffractometer (Cu Kα-1.54 A) as well as brilliant synchrotron based X-ray source (1.24 A). Our analyses confirm strain developed at microstructure level during the sintering process. Signatures of impurity species observed within diffraction patterns, which were obtained using synchrotron based X-ray source. Free charge carrier density due to unintentional doping (Fe, Cu) turns to be at high level (~ 1017 cm-3). We plan to present our findings at coming APS March meeting.
- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- 2021
- Bibcode:
- 2021APS..MARH71324P