Pressure‐induced rocksalt phase of aluminum nitride: A metastable structure at ambient condition
作者:
Qing Xia,
Hui Xia,
Arthur L. Ruoff,
期刊:
Journal of Applied Physics
(AIP Available online 1993)
卷期:
Volume 73,
issue 12
页码: 8198-8200
ISSN:0021-8979
年代: 1993
DOI:10.1063/1.353435
出版商: AIP
数据来源: AIP
摘要:
Energy‐dispersive x‐ray diffraction studies were carried out on the III‐V compound aluminum nitride to 65 GPa using a synchrotron x‐ray source. A pressure‐induced first‐order phase transition from a wurtzite structure to a rocksalt structure was observed. The first peaks of the high‐pressure phase appeared at 14 GPa. On further loading of the diamond anvil cell, the wurtzite peaks disappeared by 20 GPa. After unloading the cell to atmospheric pressure, the rocksalt structure persisted. The equilibrium transformation pressure lies on the interval 0–14 GPa.
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