Abstract
We report time-resolved light-scattering measurements showing that a magnetic suspension quenched in a strong magnetic field undergoes a dynamic instability with a selected wave vector. In the plane normal to the field, the suspension phase-separates self-similarly into columns of circular cross-section and is described by an extremely small dynamic exponent. This phase separation is shown to be dominated by a single diffusing mode, with a wave vector that corresponds to the peak of the final steady-state structure factor. This finding is explained with a mean-field model of phase separation.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 578-581 |
| Number of pages | 4 |
| Journal | Langmuir |
| Volume | 14 |
| Issue number | 3 |
| State | Published - Feb 3 1998 |
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Surfaces and Interfaces
- Spectroscopy
- Electrochemistry