Growth ofβ-FeSi2 single crystals by the chemical vapor transport method

Abstract

In order to grow β‐FeSi2 single crystals by the chemical vapor transport (CVT) method, the growth conditions, including density of iodine transport agent and growth duration, were examined. An iodine density of 8.9 mg cm–3 was thought to be optimum in the present experiment. It was found that the growth duration should be over 4 weeks for growing β‐FeSi2 single crystals. X‐ray structural analysis revealed that the growth direction of the β‐FeSi2 crystals was The growth rate along the directions with lower Miller indexes was slower than that along the directions with higher Miller indexes. The measured lattice constants were a = 0.986 nm, b = 0.780 nm, and c = 0.781 nm. These values are consistent with the previously reported values. Hall measurements showed that the electron mobility was over 350 cm2 V–1 s–1 at 10 K. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Iodine Assisted Low Temperature Synthesis of 3C-SiC Nanostructures and Their Formation Process

“…[22][23][24] Previous investigation results have suggested that if I 2 was introduced into the solvothermal system, the synthesis temperature of preparing nanomaterials could also be greatly reduced. For example, metastable rocksalt phase GaN was prepared via a benzene-thermal metathesis route through the reaction of GaI 3 and NaNH 2 at 210 C, in which I 2 acted as the transport agent.…”