Pressure dependence of the phase transition of Si3N4
β Scribed by O. Yeheskel
- Publisher
- Elsevier Science
- Year
- 1985
- Weight
- 149 KB
- Volume
- 71
- Category
- Article
- ISSN
- 0025-5416
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Synchrotron X-ray powder diffraction patterns were collected at the European Synchrotron Radiation Facility (ESRF, Grenoble, France) on powder samples of PbTiO 3 (tetragonal, Z ΒΌ 1 P4mm a ΒΌ 3:9036Γ°1Γ ( A and c ΒΌ 4:1440Γ°2Γ ( A at room conditions) applying external pressure using a diamond anvil cell.
The phase transitions wfuch occur in a diace@fene polymer crystal (PIS) at 195 K and a d.iacetyIene mouomex cxy~ti (DCH) at 142 K have been stodied as a function of pressure. For the second-order phase transit~oa in PTS tie pzesswe dependence of the transition tempera-e was found to be less than 0.0