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The effect of the noncentral impurity-matrix interaction upon the thermal expansion and polyamorphism of solid CO-C60 solutions at low temperatures
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2008 (English)In: Fizika Nizkikh Temperatur, ISSN 0132-6414, Vol. 34, no 6, 592-598 p.Article in journal (Refereed) Published
Abstract [en]

Orientational glasses with CO molecules occupying 26 and 90% of the octahedral interstitial sites in the C60 lattice have been investigated by the dilatometric method in a temperature interval of 2.5–22 K. At temperatures 4–6 K the glasses undergo a first-order phase transition which is evident from the hysteresis of the thermal expansion and the maxima in the temperature dependences of the linear thermal expansion coefficients a(T), and the thermalization times t1(T) of the samples. The effect of the noncentral CO–C60 interaction upon the thermal expansion and the phase transition in these glasses was clarified by comparing the behavior of the properties of the CO–C60 and N2–C60 solutions.

Place, publisher, year, edition, pages
2008. Vol. 34, no 6, 592-598 p.
Keyword [en]
Fullerenes, C60, thermal expansion, polyamorphism, orientational glass, carbon monoxide, CO, intercalation
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:umu:diva-11387DOI: 10.1063/1.2920178OAI: oai:DiVA.org:umu-11387DiVA: diva2:151058
Note
Simultaneous publication in Low Temperature Physics vol.34, p. 470-475 (2008).Available from: 2008-12-17 Created: 2008-12-17 Last updated: 2011-03-09Bibliographically approved

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Sundqvist, Bertil
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Department of Physics
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