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Phase diagram, stru...
Phase diagram, structure, and disorder in C60 below 300 K and 1 GPa
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- Sundqvist, Bertil (author)
- Umeå universitet,Institutionen för fysik
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- Andersson, Ove (author)
- Umeå universitet,Institutionen för fysik
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- Lundin, Anders (author)
- Umeå universitet,Institutionen för fysik
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- Soldatov, Alexander (author)
- Umeå universitet,Institutionen för fysik
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(creator_code:org_t)
- Elsevier Science Ltd, 1995
- 1995
- English.
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In: Solid State Communications. - : Elsevier Science Ltd. - 0038-1098 .- 1879-2766. ; 93:2, s. 109-112
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Earlier structural studies have shown that the pentagon-to-hexagon orientation ratio in the orientationally ordered simple cubic phase of C60 decreases under pressure. From anomalies observed in the compressibility and thermal conductivity of C60 under pressure we have deduced a pressure-temperature phase diagram for this substance in the range below 300 K and 1 GPa (10 kbar). We conclude that C60 forms a new, completely “hexagon” ordered structural phase above about 0.6 GPa at 150 K (1.2 GPa at 300 K), and that the glass transition shifts upwards in T under pressure by 54 K GPa−1. However, above 0.1 GPa, pentagon-to-hexagon orientation relaxation seems to occur on heating at an almost pressure independent temperature near 100 K.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- Fullerenes
- C60
- high pressure
- phase diagram
- orientational state
- molecular orientation
- rotational transition
- glass transition
- bulk modulus
- compressibility
- thermal conductivity
- orientational relaxation
- Condensed matter physics
- Kondenserade materiens fysik
- fysik
- Physics
- Fysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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