Abstract
Raman spectrum and X-ray powder pattern of orthorhombic sulfur have been examined at pressures up to about 10 GPa. The Raman spectrum shows reversible phase transition at 5.2 GPa, while the X-ray diffraction pattern shows no sign of phase change up to 8.3 GPa. These contradictory results are explained as follows. A high-pressure phase exists above 5.2 GPa. In this pressure region, the metastable orthorhombic phase can also exist. The argon ion laser (λ=514.5 nm) used for Raman measurement induces a structural transformation from the orthorhombic phase to the high-pressure phase. The Raman spectrum suggests that the high-pressure phase is composed of chain molecules. In addition, evidence for interference between inter- and intramolecular bondings has been observed in this phase.
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Dates
Type | When |
---|---|
Created | 20 years, 6 months ago (Feb. 22, 2005, 9:07 p.m.) |
Deposited | 2 years, 8 months ago (Dec. 6, 2022, 4:47 p.m.) |
Indexed | 1 week, 6 days ago (Aug. 23, 2025, 1:01 a.m.) |
Issued | 33 years, 5 months ago (April 1, 1992) |
Published | 33 years, 5 months ago (April 1, 1992) |
Published Print | 33 years, 5 months ago (April 1, 1992) |
@article{Nagata_1992, title={Raman Spectroscopic and X-Ray Diffraction Study of Sulfur under High Pressure}, volume={31}, ISSN={1347-4065}, url={http://dx.doi.org/10.1143/jjap.31.1078}, DOI={10.1143/jjap.31.1078}, number={4R}, journal={Japanese Journal of Applied Physics}, publisher={IOP Publishing}, author={Nagata, Kiyofumi and Nishio, Takashi and Hironori Taguchi, Hironori Taguchi and Yasuhiko Miyamoto, Yasuhiko Miyamoto}, year={1992}, month=apr, pages={1078} }