Brillouin scattering study of the fast dynamics of m-toluidine

Lucia Comez (1, 2) , Monica Pietrella (3) , Daniele Fioretto (4, 2) , Giulio Monaco (5) , Filippo Scarponi (3) , Roberto Verbeni (5) , Luciano Palmieri (4)

1 Dipartimento di Fisica
2 UNIROMA - Università degli Studi di Roma "La Sapienza" = Sapienza University [Rome]
3 Fisica
4 Fisica
5 ESRF - European Synchrotron Radiation Facility

Brillouin light and x-ray scattering have been used to investigate the dynamic structure factor of supercooled and glassy m-toluidine in the temperature range between 34 and 303 K. In addition to the obiquitous α relaxation, evidence is given of a fast relaxation process active in the ns-ps time region. Information on the activation energy of the fast process is obtained from the attenuation of longitudinal acoustic modes.

Mots clés: Physical Sciences

Lucia Comez, Monica Pietrella, Daniele Fioretto, Giulio Monaco, Filippo Scarponi, et al.. Brillouin scattering study of the fast dynamics of m-toluidine. Philosophical Magazine, 2007, 87 (3-5), pp.651-656. ⟨10.1080/14786430601021686⟩. ⟨hal-00514355⟩