Year: 2001
Type: article
Abstract: The phase diagram and stability limits of diatomic solid nitrogen have been explored in a wide pressure-temperature range by several optical spectroscopic techniques. A narrow-gap semiconducting phase $\ensuremath{\eta}$ has been found to exist in a range of 80--270 GPa and 10--510 K. The vibrational and optical properties of the $\ensuremath{\eta}$ phase produced under these conditions indicate that it is largely amorphous and back transforms to a new molecular phase. The band gap of the $\ensuremath{\eta}$ phase is found to decrease with pressure indicating possible metallization by band overlap above 280 GPa.
Institutions: Carnegie Institution for Science, Geophysical Laboratory
Language: English
Subfield: Geophysics
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1993784976