Abstract
Laser-heated diamond-anvil cell (LHDAC) experiments reveal electronic changes in KBr at pressures between ∼13-81GPa when heated to high temperatures that cause runaway heating to temperatures in excess of ∼5000K. The drastic changes in absorption behavior of KBr are interpreted as rapid formation of high-pressure F-center defects. The defects are localized to the heated region and thus do not change the long-range crystalline order of KBr. The results have significant consequences for temperature measurements in LHDAC experiments and extend the persistence of F centers in alkali halides to at least 81 GPa.
Original language | English (US) |
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Article number | 094103 |
Journal | Physical Review B |
Volume | 97 |
Issue number | 9 |
DOIs | |
State | Published - Mar 9 2018 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics