NEW PHASE OF OXYGEN AT HIGH-PRESSURE AND LOW-TEMPERATURE

被引:11
作者
CARTER, WB
SCHIFERL, D
LOWE, ML
GONZALES, D
机构
[1] Los Alamos National Laboratory, Los Alamos
关键词
D O I
10.1021/j100159a075
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We have extended the phase diagram of oxygen to 34 GPa at 20 K with Raman spectroscopy on samples in diamond anvil cells. At 25.0 GPa and 20 K, a new phase, which we term zeta-O2, appears. In going from epsilon-O2 to zeta-O2, the two low-frequency intermolecular vibrational modes split abruptly by about 10 cm-1, while the vibron remains a single peak. The transition appears to be first order.
引用
收藏
页码:2516 / 2519
页数:4
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