The Journal of the Petrological Society of Korea (암석학회지)
- Volume 3 Issue 1
- /
- Pages.34-40
- /
- 1994
- /
- 1226-2471(pISSN)
High pressure X-ray diffraction study on a graphite using Synchrotron Radiation
고압하에서 방사광을 이용한 흑연에 대한 연구
- Kim, Young-Ho (Chungbuk National University) ;
- Na, Ki-Chang (Chungbuk National University)
- Published : 1994.03.01
Abstract
High pressure X-ray diffraction study was carried out on a graphite to investigate its compressibility as well as any possible phase transition to the hexagonal diamond structure at room temperature. Energy dispersive X-ray diffraction method was introduced using a Mao-Bell type diamond anvil cell with Synchrotron Radiation. Polycrystalline sodium chloride was compressed together with graphite for the high pressure determinations. Because of the poor resolution of the X-ray diffraction pattern of graphite, its compressibility was estimated to be almost same as that of NaCl by graphite (002) X-ray diffraction peak only. An observation of any new peak from a possible hexagonal diamond phase seems very unplausible for its definite identification based on the present data. Alternative approaches such as an Wiggler Radiation source as well as a Large Volume high pressure apparatus will be necessary for the detailed studies on a graphite in future.
Keywords
- Energy dispersive X-ray diffraction (EDXRD);
- diamond anvil cell (DAC);
- synchrotron radiation (SR);
- phase transition;
- hexagonal diamond phase