Electrical Properties of the (Copper, Yttrium)-Containing Organometallic Compound as a Basis for Temperature and Magnetic Sensors in Biomedical Diagnostic Devices

Abstract

In this work, the authors have synthesised a new semiconductor material, pentakis(acetylacetonato) (copper(II), yttrium(III)) (I), with the following composition [CuY(AA)5], AA = H3C–C(O)–CH=C(O–)–CH3. Based on elemental analysis and physicochemical methods, it was found that the complex compound (I) obtained contains atoms of yttrium(III) and copper(II) in the ratio Cu:Y = 1:1, and its composition corresponds to the empirical formula CuYO10C25H35. The electrical conductivity of the obtained material was measured in pressed form. For the complex compound (I), the authors calculated that the number of valence electrons in one molecule is 200; the mass of one molecule is 107.558×10–20 kg; the total number of molecules in a cylindrical sample weighing 0.204 g and having a volume of 32.37×10–9 m3 is 18.967×1013 molecules. In the temperature range of 303 ~ 403 K, the resistivity of the pressed sample decreases 2×1012 to 6×103Ohm•cm. This confirms that the synthesised compound is a semiconductor with a band gap of 2.066 eV. The authors investigated the conductive properties of the complex compound as a thermosensitive element. For this purpose, the authors used an experimental sample of compressed material with geometric dimensions of 1×10–3m×5×10–3m×5×10–3m.