at Google ScholarTitle data
Gollwitzer, Christian ; Rehberg, Ingo ; Richter, Reinhard:
Via hexagons to squares in ferrofluids : experiments on hysteretic surface transformations under variation of the normal magnetic field.
In: Journal of Physics: Condensed Matter.
Vol. 18
(2006)
Issue 38
.
- S2643.
ISSN 1361-648X
DOI: https://doi.org/10.1088/0953-8984/18/38/S08
Abstract in another language
We report on different surface patterns on magnetic liquids following the Rosensweig instability. We compare the bifurcation from the flat surface to a hexagonal array of spikes with the transition to squares at higher fields. From a radioscopic mapping of the surface topography we extract amplitudes and wavelengths. For the hexagon–square transition, which is complex because of coexisting domains, we tailor a set of order parameters like peak-to-peak distance, circularity, angular correlation function and pattern specific amplitudes from Fourier space. These measures enable us to quantify the smooth hysteretic transition. Voronoi diagrams indicate a pinning of the domains. Thus the smoothness of the transition is roughness on a small scale.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Institutions of the University: | Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Former Professors Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics V Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Former Professors > Chair Experimental Physics V - Univ.-Prof. Dr. Ingo Rehberg Profile Fields Profile Fields > Advanced Fields Profile Fields > Advanced Fields > Nonlinear Dynamics |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 500 Science > 530 Physics |
| Date Deposited: | 28 Sep 2018 07:34 |
| Last Modified: | 21 Nov 2023 13:54 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/42960 |