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On the phase-transition in anthracene induced by high pressure |
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| Authors: | Roland Resel Martin Oehzelt Atsuko Nakayama |
| Institution: | a Institute of Solid State Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria b Division of Materials Physics, Graduate School of Engineering Science and Research Center for Materials Science at Extreme Conditions, Osaka 560-8531, Japan c Research Center for Advanced Carbon Materials, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8565, Japan d National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan |
| Abstract: | The crystallographic structure of anthracene is studied under high pressure up to 27 GPa using diamond anvil cells. Different pressure-transmitting media (helium, a methanol-ethanol mixture, a normal- and iso-pentane mixture and no medium) were used up to specific critical pressures where the hydrostatic conditions are lost. It is clearly observed that the loss of hydrostaticity is associated with a crystallographic phase-transition in anthracene. The phase-transition is observed as reversible, and it is accompanied by a large hysteresis. These observations clarify conflicting reports in the literature on the high-pressure phase-transition of anthracene. |
| Keywords: | 62 50 +p 61 50 Ks 81 30 &minus t 61 10 Nz |
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