Journal ArticleDOI
Interdiffusion and Convection in High Magnetic Fields
G. Mathiak,G. Frohberg +1 more
Reads0
Chats0
TLDR
In this paper, the magnetic field effect on diffusion experiments in vertical capillaries was relatively minor, while the damping effect of the magnetohydrodynamic damping was clearly demonstrated in horizontal and vertical capellaries.Abstract:
In liquid diffusion measurements, the main problem is the additional mass transport by convection. In the system indium-tin, convection caused by density gradients in horizontal and vertical capillaries was characterised, and the magnetohydrodynamic damping was investigated experimentally. While the magnetic field effect on diffusion experiments in vertical capillaries was relatively minor, the damping effect of the magnetic field could be clearly demonstrated in horizontal capillaries. Comparing these experiments with experiments in microgravity it can be seen that in the investigated system convection was practically completely suppressed by transversal magnetic fields higher than 3T. In electrically conducting crucibles, the sample was mixed by Lorentz forces on account of thermoelectric currents.read more
Citations
More filters
Journal ArticleDOI
Protein crystallization in a magnetic field
TL;DR: In this paper, the authors reviewed the background and more recent progress and discuss the future perspectives in this research field, and found that a magnetic field can align the crystals along the field direction, decrease the diffusivity of macromolecules in the solution, and increase the viscosity of the solution.
Journal ArticleDOI
New Determinations of Diffusion Coefficients for Various Dopants in Liquid Silicon
TL;DR: In this paper, the diffusion coefficients of various dopants in liquid silicon are determined based on an analysis of the effective segregation coefficients obtained by Kodera in Czochralski growth of silicon-based alloys.
Journal ArticleDOI
Ferromagnetic Cu-doped AlN nanorods
TL;DR: In this article, the spontaneous magnetization and the coercivity of the AlN:Cu nanorods are about 0.38?emu?cm?3 and 100?Oe, respectively.
Journal ArticleDOI
The solidification behavior of the AZ61 magnesium alloy during electromagnetic vibration processing
TL;DR: In this article, the microstructure evolution of the magnesium-based AZ61 alloy was quantitatively examined in terms of the total average grain size and the individual grain size distribution.
Journal ArticleDOI
Reference Microgravity Measurements of Liquid Phase Solute Diffusivities in Tin- and Aluminum-Based Alloys
TL;DR: In this paper, the authors present results of the measurement of solute diffusivities in the Al-Ni and Sn-Bi-In systems in microgravity and may therefore be assigned as reference values.
References
More filters
Journal ArticleDOI
Dispersion of soluble matter in solvent flowing slowly through a tube
TL;DR: In this paper, it was shown analytically that the distribution of concentration produced in this way is centred on a point which moves with the mean speed of flow and is symmetrical about it in spite of the asymmetry of the flow.
Journal ArticleDOI
The use of magnetic fields in semiconductor crystal growth
R.W. Series,D.T.J. Hurle +1 more
TL;DR: The application of a magnetic field to semiconductor crystal growth melts in order to control melt flow and thereby dopant distribution on both macro-and micro-scales is reviewed in this paper.
Journal ArticleDOI
On sideways diffusive instability
TL;DR: In this paper, the stability of the motion generated in a differentially heated vertical slot filled with a linearly stratified salt solution was investigated and the theoretical mean motion field between infinite plates is a function of the Rayleigh number.
Journal ArticleDOI
On the theory of diffusion in a magnetic field
TL;DR: In this article, the diffusion of weakly paramagnetic aluminum and 3% copper solid diffusion couples were diffusion annealed in a magnetic field, and the diffusion was shown to be stable.