This title appears in the Scientific Report :
2005
Please use the identifier:
http://dx.doi.org/10.1088/0953-8984/17/41/025 in citations.
Kinetics of decomposition in ionic solids: IV: Transition between nucleation and spinodal decomposition observed by time-resolved phonon spectroscopy
Kinetics of decomposition in ionic solids: IV: Transition between nucleation and spinodal decomposition observed by time-resolved phonon spectroscopy
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 monitor...
Saved in:
Personal Name(s): | Elter, P. |
---|---|
Eckold, G. / Gibhardt, H. / Schmidt, W. / Hoser, A. | |
Contributing Institute: |
Neutronenstreuung; IFF-INS |
Published in: | Journal of physics / Condensed matter, 17 (2005) S. 6559 - 6573 |
Imprint: |
Bristol
IOP Publ.
2005
|
Physical Description: |
6559 - 6573 |
DOI: |
10.1088/0953-8984/17/41/025 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie Betrieb und Weiterentwicklung der Neutronenquelle FRJ- 2 |
Series Title: |
Journal of Physics: Condensed Matter
17 |
Subject (ZB): | |
Publikationsportal JuSER |
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. |