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Thermophysical properties of C70 up to 1.2 GPa
Umeå University, Faculty of Science and Technology, Physics.
Umeå University, Faculty of Science and Technology, Physics.
Umeå University, Faculty of Science and Technology, Physics.
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, Published paper (Refereed)
Abstract [en]

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.
Series
Materials Research Society Symposium Proceedings, ISSN 0272-9172 ; 359
Keyword [en]
Fullerenes, C70, high pressure, phase diagram, structure, thermal conductivity, compressibility
National Category
Condensed Matter Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:umu:diva-26365ISBN: 1-55899-260-X (print)OAI: oai:DiVA.org:umu-26365DiVA: diva2:242139
Note
Editors: P. Bernier, D. S. Bethune, L. Y. Chiang, T. W. Ebbesen, R. M. Metzger, and J. W. MintmireAvailable from: 2009-10-07 Created: 2009-10-07 Last updated: 2010-01-29

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