Compressibility, specific heat capacity, and Grüneisen parameter for C60/C70
1992 (English)In: Solid State Communications, ISSN 0038-1098, Vol. 84, no 9, 879-883 p.Article in journal (Refereed) Published
We have measured the specific heat capacity cp of C60/C70 between 110 and 310 K and its compressibility κ up to 1.1 GPa (11 kbar) at 293 K, a range in t and p which overlaps reported ranges of stability of both the rotationally disordered high T, low p fcc phase and the low T high p orientationally ordered sc phase. No sharp anomaly is observed in cp at the transition. The bulk modulus B near p = 0 was 8.4 GPa, rapidly increasing to about 16 GPa near 1 GPa. For our data, the intermolecular forces could be modeled by either a Lennard-Jones or a Born-Mayer potential, but this was not the case if literature data for compression vs. p were used.
Place, publisher, year, edition, pages
Elsevier Science Ltd , 1992. Vol. 84, no 9, 879-883 p.
Fullerenes, C60, compressibility, bulk modulus, specific heat capacity, Grüneisen parameter, high pressure, intermolecular potential, Lennard-Jones potential, Born-Mayer potential, phase transition
Condensed Matter Physics
Research subject Physics
IdentifiersURN: urn:nbn:se:umu:diva-26556DOI: 10.1016/0038-1098(92)90451-EOAI: oai:DiVA.org:umu-26556DiVA: diva2:272355