title: Thermal properties and Brillouin-scattering study of glass, crystal, and "glacial" states in n-butanol.
abstract: We investigated through noncommercial calorimetry and elastoacoustic Brillouin experiments the phase diagram of n-butanol and measured the specific heat and the thermal conductivity in a wide low-temperature range for its three different states, namely, glass, crystal, and the so-called "glacial" states. The main aim of the work was to shed light on the controversial issue of these allegedly polyamorphic transitions found in some molecular glass-forming liquids, first reported to occur in triphenyl phosphite and later in n-butanol. Our experimental results show that the obtained glacial state in n-butanol is not a homogenous, amorphous state, but rather a mixture of two different coexisting phases, very likely the (frustrated) crystal phase embedded in a disordered, glassy phase.
authors.affiliation: Laboratorio de Bajas Temperaturas, Departamento de Física de la Materia Condensada, C-III, Instituto de Ciencia de Materiales Nicolás Cabrera, Universidad Autónoma de Madrid, Cantoblanco, Madrid E-28049, Spain.
authors.forename: Merzak
authors.initials: M
authors.lastname: Hassaine
authors.forename: Rafael J
authors.initials: RJ
authors.lastname: Jiménez-Riobóo
authors.forename: Irina V
authors.initials: IV
authors.lastname: Sharapova
authors.forename: Oxana A
authors.initials: OA
authors.lastname: Korolyuk
authors.forename: Alexander I
authors.initials: AI
authors.lastname: Krivchikov
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Ramos