TY - JOUR
T1 - Effect of crystalline structure and impurity content of C60 thin films on the order/disorder phase transition
AU - Katz, Eugene A.
AU - Faiman, David
AU - Shtutina, Svetlana
AU - Isakina, Aleksandra P.
AU - Yagotintsev, Konstantin A.
N1 - Funding Information:
This work was funded partly by the Israel Ministry of National Infrastructures. E.A.K. also thanks financial support by the Israel Ministry of Emigrant Absorption and Gensseler Foundation.
PY - 2001/1/1
Y1 - 2001/1/1
N2 - Near the temperature of 260 K, C60 crystal is known to undergo a first order phase transition, associated with changes in molecular rotations. The present paper reports the effect of the crystalline structure and impurity content of C60 thin films on their structural behavior near this phase transition. Polycrystalline C60 films with different grain sizes and oxygen content were obtained by varying the conditions of their vacuum deposition and post-grown exposure. Temperature-resolved X-ray diffraction in the range 300 - 15 K was used to determine the lattice parameter and its changes near the phase transition temperature. Decrease in grain sizes and increase in oxygen content of the films are found to lead to a gradual reduction in the discontinuity in lattice parameter and the transition temperature.
AB - Near the temperature of 260 K, C60 crystal is known to undergo a first order phase transition, associated with changes in molecular rotations. The present paper reports the effect of the crystalline structure and impurity content of C60 thin films on their structural behavior near this phase transition. Polycrystalline C60 films with different grain sizes and oxygen content were obtained by varying the conditions of their vacuum deposition and post-grown exposure. Temperature-resolved X-ray diffraction in the range 300 - 15 K was used to determine the lattice parameter and its changes near the phase transition temperature. Decrease in grain sizes and increase in oxygen content of the films are found to lead to a gradual reduction in the discontinuity in lattice parameter and the transition temperature.
UR - http://www.scopus.com/inward/record.url?scp=85010772998&partnerID=8YFLogxK
U2 - 10.1557/proc-675-w7.6.1
DO - 10.1557/proc-675-w7.6.1
M3 - Article
AN - SCOPUS:0035559512
SN - 0272-9172
VL - 675
SP - W7.6.1-W7.6.6
JO - Materials Research Society Symposium Proceedings
JF - Materials Research Society Symposium Proceedings
M1 - 761
T2 - Nanotubes, Fullerenes, Nanostructured and Disordered Carbon
Y2 - 17 April 2001 through 20 April 2001
ER -