TY  - JOUR
AU  - Elter, P.
AU  - Eckold, G.
AU  - Gibhardt, H.
AU  - Schmidt, W.
AU  - Hoser, A.
TI  - Kinetics of decomposition in ionic solids: IV: Transition between nucleation and spinodal decomposition observed by time-resolved phonon spectroscopy
JO  - Journal of physics / Condensed matter
VL  - 17
SN  - 0953-8984
CY  - Bristol
PB  - IOP Publ.
M1  - PreJuSER-51540
SP  - 6559 - 6573
PY  - 2005
N1  - Record converted from VDB: 12.11.2012
AB  - Real-time inelastic neutron scattering has been used to study the kinetics of the demixing process in AgBr-NaBr mixed single crystals. The variation of transverse acoustic phonon spectra provides most direct information about the microscopic non-equilibrium behaviour. The phase separation is monitored by a well defined splitting of phonon peaks that reflects the different dynamical behaviours of the constituents. As a function of temperature, time evolution of the phonon spectra changes drastically, thus proving unambiguously that the demixing process is dominated by nucleation in the high-temperature regime and by concentration fluctuations at low temperatures.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000233589400030
DO  - DOI:10.1088/0953-8984/17/41/025
UR  - https://juser.fz-juelich.de/record/51540
ER  -