| Issue |
Europhys. Lett.
Volume 51, Number 3, August I 2000
|
|
|---|---|---|
| Page(s) | 268 - 274 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2000-00347-0 | |
| Published online | 01 September 2002 | |
New phase boundary and high-pressure thermoelasticity of ZnO
1
Mineral Physics Institute, SUNY at Stony Brook - Stony Brook, NY
11794, USA
2
Department of
Geosciences, SUNY at Stony Brook - Stony Brook, NY 11794, USA
Corresponding author: fad@pmc.jussieu.fr
Received:
14
January
2000
Accepted:
25
May
2000
The phase transition of zinc oxide from B4 (hexagonal wurtzite
structure) to B1 (cubic rocksalt structure) has been studied by
energy-dispersive powder diffraction technique up to 11 GPa and
1273 K. Analysis of equation-of-state (PVT) data for the rocksalt
phase yields precise values of the bulk modulus and its
temperature derivative. The previously accepted P-T phase
diagram is shown to be incorrect. It is established that the B1
phase is not recoverable. The equilibrium transition pressure of
the B4-to-B1 transformation is near 6 GPa (at ambient
temperature) and the 
slope close to zero. These new results
are confirmed by using simultaneously three other different types
of experiment (imaging, ultrasonic and X-ray diffraction studies
on single-crystal specimens).
PACS: 07.35.+k – High-pressure apparatus and techniques; shock tubes; diamond anvil cells / 64.70.Kb – Solid-solid transitions / 81.30.Dz – Phase diagrams of other materials
© EDP Sciences, 2000
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.