Application of rotating magnetic fields to crystal growth under microgravity (experiments on FOTON-M3)

I. V. Barmin¹ - A. S. Senchenkov¹ - A. Greif² - O. Pätzold² - U. Wunderwald³ - A. Cröll⁴ - A. Mitric⁴

¹ KBOÌ, 22 Berezhkovskaya quay, 121059 Moscow, Russia
² TU Bergakademie, Leiziger Straße 34, 09596 Freiberg, Germany
³ Fraunhofer THM Freiberg, Germany
⁴ University of Freiburg, Hermann-Herder-Str. 5, D-79104 Freiburg, Germany

Abstract
Several doped and alloyed crystals such as Ge-Ga and Ge-Si were processed during the international FOTON-M3 spaceflight mission in September 2007. The growth furnace was equipped with a rotating magnetic field (RMF) with induction and frequency up to 3 mT and 100 Hz, respectively. The main goals of the experiments were to study the influence of the RMF on the crystal growth under microgravity. The first results obtained under microgravity are presented and discussed with respect to the ground reference experiments and numerical simulations Figs 5, Refs 6.