Author： Pravica Michael Galley Martin Park Changyong Ruiz Harrison Wojno Jennifer
Publisher： Taylor & Francis Ltd
ISSN： 0895-7959
Source： International Journal of High Pressure Research, Vol.31, Iss.1, 2011-03, pp. : 80-85
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Abstract
We report a synchrotron energy-dispersive X-ray diffraction study of the novel high explosive 1,1-diamino-2,2-dinitroethylene at high pressures and high temperatures. Pressure was generated using a Paris-Edinburgh cell to employ larger sample volumes. High temperatures were created using a resistive graphite cylinder surrounding the sample. The PT phase diagram was explored in the 3.3 GPa pressure range and in the ∼ 400°C temperature range. We believe that the sample commenced in the α-phase and then ended up in an amorphous phase when the temperature increased beyond 280°C near 2 GPa, which we believe to be the γ-phase. Further pressure and temperature cycling suggests that the sample transformed reversibly into and out of the amorphous phase near the phase line.
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