Electromagnetic control of local temperature gradients in a Czochralski crystal growth model

This experimental work is concerned with optimisation of the Czochralski crystal growth process. With respect to the shape of the solidication front and the related mono-crystalline growth, the ratio of the horizontal and the vertical temperature gradient at the triple point liquid-solid atmosphere is thought of being a crucial magnitude, which desirably should be in the order of unity. A liquid metal model experiment was therefore build that allows studying this ratio under the influence of magnetic elds applied to the melt.