Jjm. Ramos et Jm. Campos, MOLECULAR MOTIONS IN THE SOLID ROTATOR PHASE OF 2-ADAMANTONE - A THERMALLY STIMULATED CURRENTS STUDY, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 287, 1996, pp. 285-293
A Thermally Stimulated Discharge Currents (t.s.d.c.) study of 2-adaman
tanone has been performed in the temperature range from -160 degrees C
to +100 degrees C in order to analyse the phase transitions and the m
olecular motions present in this solid. A relaxation was observed at -
130 degrees C which was attributed to the transition between an ordere
d brittle phase and a biphasic system composed by this ordered phase a
nd an orientationaly disordered phase. An higher temperature relaxatio
n was also observed which probably corresponds to the onset of the mol
ecular self-diffusion in the solid. It was suggested that the t.s.d.c.
technique is potentially a powerful technique to study molecular moti
ons in solid rotator phases.