Abstract
Crystal structure and compressibility of potassium azide was investigated by in-situ synchrotron powder X-ray diffraction in a diamond anvil cell at room temperature up to 37.7 GPa. In the body-centered tetragonal (bct) phase, an anisotropic compressibility was observed with greater compressibility in the direction perpendicular to the plane containing N3- ions than directions within that plane. The bulk modulus of the bct phase was determined to be 18.6(7) GPa. A pressure-induced phase transition may occur at 15.5 GPa.
| Original language | English |
|---|---|
| Pages (from-to) | 736-739 |
| Number of pages | 4 |
| Journal | Journal of Physics and Chemistry of Solids |
| Volume | 72 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 2011 |
Keywords
- Anisotropic compressibility
- Diamond anvil cell
- Phase transition
- Synchrotron X-ray diffraction
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Cite this
Ji, C., Zhang, F., Hou, D., Zhu, H., Wu, J., Chyu, M. C., Levitas, V. I., & Ma, Y. (2011). High pressure X-ray diffraction study of potassium azide. Journal of Physics and Chemistry of Solids, 72(6), 736-739. https://doi.org/10.1016/j.jpcs.2011.03.005