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Phase transitions i...
Phase transitions in C70 at high pressure : A thermal conductivity study
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- Soldatov, Alexander (författare)
- Umeå universitet,Institutionen för fysik
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- Sundqvist, Bertil (författare)
- Umeå universitet,Institutionen för fysik
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(creator_code:org_t)
- Pennington, NJ : The Electrochemical Society, 1995
- 1995
- Engelska.
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Ingår i: Fullerenes: Recent Advances in the Chemistry and Physics of Fullerenes and Related Materials, volume 2. - Pennington, NJ : The Electrochemical Society. - 1566771048 ; , s. 881-890
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- Measurements of the thermal conductivity lambda and the specific heat capacity per unit volume rhocv of polycrystalline C70 were carried out in the temperature range 100 - 450 K under pressures up to 1 GPa. Anomalies have been observed in lambda and rhocv near 300 K on cooling (increasing pressure) indicating a phase transition from a rotationally disordered phase into an ordered phase. The phase boundary for this transition was found to have a slope dT/dp = 70 K/GPa. The temperature dependence of lambda indicates a substantial amount of structural defects in the sample and strong hysteresis effects. We propose a phase diagram describing the probable evolution of orientational structure in T-p space.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Fullerenes
- C70
- phase diagram
- high pressure
- thermal conductivity
- molecular orientation
- Condensed matter physics
- Kondenserade materiens fysik
- fysik
- Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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