Abstract
Mass transport rate studies in the multi-component multi-reaction system MnS-MnSe-iodine were performed on atomic mixtures of high purity elements in the temperature gradient 945 → 850 ° C and with iodine pressures ranging from 0.7 to 7.8 atm (based on diatomic iodine). Experimental data evaluated in terms of material flux in moles/cm 2 · sec as a function of iodine pressure show that the mass transfer process is predominantly by convection within the applied pressure range. Growth studies of single crystals of MnS, MnSe, and solid solution by vapor transport of the elements with iodine yielded crystals of 2–5 mm edge length (octahedra and platelets) using iodine concentrations of 1–3 mg/cm 3 tube volume and small temperature gradients ( ΔT < 50 ° C). The as-grown surfaces of the platelets are (111) planes. Thermoelectric measurements indicate p-type conductivity of the single crystals. The effects of different iodine concentrations, temperature gradients, and etching of the transport ampules on crystal growth are discussed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
