Experimental Determination of Carbon Solubility in Si0.56Cr0.4M0.04 (M = Transition Metal) Solvents for Solution Growth of SiC

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Si0.56Cr0.4M0.04 (M = Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Rh, and Pd) solvents were investigated to identify new multi-component materials in which carbon is highly soluble, because solubility is a key parameter in solution growth of SiC. The solubility of carbon in Si0.56Cr0.4Co0.04 was 8.37 at%, the highest value among the tested multi-component materials. This is about 2.5 times the solubility of carbon in Si0.6Cr0.4. These results show that addition of a small amount of a transition metal enhanced the solubility of carbon in Si0.6Cr0.4. This technique for determining carbon solubility is effective for investigating crystal growth using solvents with several components, for which complex thermodynamic calculations are necessary.

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Robert Stahlbush, Philip Neudeck, Anup Bhalla, Robert P. Devaty, Michael Dudley and Aivars Lelis

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43-46

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K. Y. Hyun et al., "Experimental Determination of Carbon Solubility in Si0.56Cr0.4M0.04 (M = Transition Metal) Solvents for Solution Growth of SiC", Materials Science Forum, Vol. 924, pp. 43-46, 2018

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June 2018

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