N. N. Niftiyev, O. B. Tagiyev, M. B. Muradov, F. M. Mammadov, “AC electrical properties of FeIn$_2$S$_4$”, Zhurnal Tekhnicheskoi Fiziki, 2012, Volume 82, Issue 4,Pages 147

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AC electrical properties of FeIn$_2$S$_4$

N. N. Niftiyev^a, O. B. Tagiyev^b, M. B. Muradov^c, F. M. Mammadov^d

^a N. Tusi Azerbaijan State Pedagogical University
^b Institute of Physics Azerbaijan Academy of Sciences
^c Baku State University
^d Institute of Chemical Problems, National Academy of Sciences of Azerbaijan, Baku, Az-1143, Azerbaijan

Abstract: The frequency and temperature dependences of the ac capacitance and resistivity of FeIn$_2$S$_4$ semiconductors are studied. Resonances are observed at certain temperatures in the frequency range (2.5–5.0) $\times$ 10$^5$ Hz. The permittivity of the crystals and the activation energy of charge carriers are determined. It is found that electrical conduction in the given temperature interval is governed by an activation mechanism. The activation energy is frequency-dependent, because the relaxation time of barrier layers decreases with rising frequency.

Received: 18.08.2011