Thermophysical properties of C70 up to 1.2 GPa
1995 (English)In: Science and Technology of Fullerene Materials: Materials Research Society Symposium Proceedings vol. 359, Pittsburgh: Materials Research Society , 1995, 555-560 p.Conference paper (Refereed)
We have measured the thermal conductivity lambda and the compressibility of highly pure C70 in the range 90 to 450 K under pressures up to 1.2 GPa. Our results for the thermal conductivity indicate molecular rotation in C70 abobe 280 K at zero pressure. The phase boundary for the rotationally disordered phase has an approximate slope dT/dp ) 75 K/GPa. The bulk modulus B increases linearly with increasing p above 0.1 GPa, with an extrapolated zero pressure value at 296 K of B(0) = 8.3 GPa. Unexpected anomalies are found in both B and lambda near 100 MPa, and we tentatively suggest that orientational ordering is responsible.
Place, publisher, year, edition, pages
Pittsburgh: Materials Research Society , 1995. 555-560 p.
, Materials Research Society Symposium Proceedings, ISSN 0272-9172 ; 359
Fullerenes, C70, high pressure, phase diagram, structure, thermal conductivity, compressibility
Condensed Matter Physics
Research subject Physics
IdentifiersURN: urn:nbn:se:umu:diva-26365ISBN: 1-55899-260-XOAI: oai:DiVA.org:umu-26365DiVA: diva2:242139
Editors: P. Bernier, D. S. Bethune, L. Y. Chiang, T. W. Ebbesen, R. M. Metzger, and J. W. Mintmire2009-10-072009-10-072010-01-29