page_title: Cadmium arsenide
section_title: Preparation
hierarchical_section_title: Cadmium arsenide / Preparation
caption_attribution_description: Cross-sectional side view of an alumina furnace used for self-selecting vapor growth of a Cd3As2 single crystal. The positions of the ampoule in which transport takes place and the temperature profile of the furnace for Cd3As2 growth are shown.
context_page_description: Cadmium arsenide is an inorganic semimetal in the II-V family. It exhibits the Nernst effect.
context_section_description: Cadmium arsenide can be prepared as amorphous semiconductive glass. According to Hiscocks and Elliot, the preparation of cadmium arsenide was made from cadmium metal, which had a purity of 6 N from Kock-Light Laboratories Limited. Hoboken supplied β-arsenic with a purity of 99.999%. Stoichiometric proportions of the elements cadmium and arsenic were heated together. Separation was difficult and lengthy due to the ingots sticking to the silica and breaking. Liquid encapsulated Stockbarger growth was created. Crystals are pulled from volatile melts in liquid encapsulation. The melt is covered by a layer of inert liquid, usually B₂O₃, and an inert gas pressure greater than the equilibrium vapor pressure is applied. This eliminates the evaporation from the melt which allows seeding and pulling to occur through the B₂O₃ layer.
caption: Schematic of the vapor growth of Cd3As2 crystals using an alumina furnace.[1]
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