TY - JOUR
T1 - Synthesis and characterization of Hg metal-doped C60
AU - Venegas, V.
AU - Ortiz-López, J.
AU - Rueda-Morales, G.
AU - Caleyo, F.
N1 - Funding Information:
V.V. and F.C. would like to thank Centro Latinoamericano de Fı́sica in México (CLAFM) for financial support. J.O.L. acknowledges partial support from Comisión de Operación y Fomento de Actividades Académicas (I.P.N.-México) for a SIBE fellowship. This work was supported, in part, by CONACYT (México) grant No. F-596-E9404 (J.O.L.).
PY - 2000/3/3
Y1 - 2000/3/3
N2 - Synthesis of the new fulleride HgxC60 was achieved inside an evacuated ampoule filled with metallic Hg and C60 powder kept at 500°C for several months. A heat capacity anomaly is observed at 232.3 K, reminiscent of the ordering transition of pristine C60 but with reduced transition enthalpy. Weakly shifted F1u infrared bands suggest lack of Hg-C60 charge transfer. The structure at 300 K is as in pristine C60 but with a measurable lattice expansion consistent with Hg intercalation in octahedral sites. This lattice expansion induces downshift of the ordering transition and weak displacement of infrared bands.
AB - Synthesis of the new fulleride HgxC60 was achieved inside an evacuated ampoule filled with metallic Hg and C60 powder kept at 500°C for several months. A heat capacity anomaly is observed at 232.3 K, reminiscent of the ordering transition of pristine C60 but with reduced transition enthalpy. Weakly shifted F1u infrared bands suggest lack of Hg-C60 charge transfer. The structure at 300 K is as in pristine C60 but with a measurable lattice expansion consistent with Hg intercalation in octahedral sites. This lattice expansion induces downshift of the ordering transition and weak displacement of infrared bands.
UR - http://www.scopus.com/inward/record.url?scp=0001684337&partnerID=8YFLogxK
U2 - 10.1016/S0009-2614(00)00073-7
DO - 10.1016/S0009-2614(00)00073-7
M3 - Artículo
SN - 0009-2614
VL - 318
SP - 655
EP - 661
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 6
ER -