Journal of Physical Studies 6(2), 193–196 (2002) DOI: https://doi.org/10.30970/jps.06.193 THE STRUCTURE AND PHYSICAL PROPERTIES OF THE InSe AND GaSe INTERCALATED WITH MOLECULAR FLUORINE I. I. Grigorchak1, V. V. Netyaga2, S. V. Gavrilyuk2, S. I. Drapak2 1Lviv Branch of the Institute of Materials Science Problems, National Academy of Science of Ukraine, 1 Patona Str., Lviv, UA–79040, Ukraine 2Chernivtsi Branch of the Institute of Materials Science Problems, National Academy of Science of Ukraine, 5 Iryna Vilde Str., Chernivtsi, UA–58001, Ukraine

By exposition of InSe and GaSe as single crystals or powder in a flow of molecular fluorine an intercalation was carried out. It was established that only for gallium selenide powder the intercalation with fluorine is possible. At the same time, the indium selenide both as single crystal and as powder interacts well with fluorine forming InSeF$_{x}$ compounds. The results of the X-ray study and the electric resistivity $ρ_{\bot}$ across the layers modificated by intercalation are presented for InSe single crystals. To determine the peculariarities of free carriers of current gas, a study of frequency and temperature dependencies of complex electrical conductivity in a wide frequency range from 100 mHz to 1 MHz has been conducted. The effect of the intercalation fluorine on polarization properties of gallium and indium selenides has been studied.

PACS number(s): 72.20.-i, 72.80.Jc, 61.10.Hf, 61.10.Nz

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