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Compressibility and...
Compressibility and Structure of C70
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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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- Sundqvist, Bertil (author)
- Umeå universitet,Institutionen för fysik
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(creator_code:org_t)
- 2007-07-25
- 1995
- English.
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In: Europhysics letters. - : IOP Publishing. - 0295-5075 .- 1286-4854. ; 30:8, s. 469-474
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- The compressibility of C70 has been investigated by means of direct piston and cylinder measurements in the temperature range 150 to 365 K and up to 1 GPa. At 296 and 343 K we find a very rapid change of volume with pressure below 0.15 GPa. We tentatively interpret this as a continuous molecular reorientation with pressure, probably resulting in a transformation from a mixture of face-centred cubic (f.c.c.) and rhombohedral (r.h.) phases to mainly pure r.h. phase. At 365 K as well as at 236 K and below we see no anomalies indicating any structural or rotational anomalies in the pressure range investigated. The zero-pressure bulk modulus decreases with increasing temperature, from 13.1 GPa at 185 K to 7.9 GPa at 365 K. Our volumetric measurements confirm a recently proposed phase diagram for C70.
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
- C70
- phase diagram
- high pressure
- compressibility
- bulk modulus
- molecular orientation
- fcc structure
- rhombohedral structure
- Condensed matter physics
- Kondenserade materiens fysik
- fysik
- Physics
- Fysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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