caa a22 4500 467923531 CHVBK 20180406152923.0 cr unu---uuuuu 170328e20061001xx s 000 0 eng 10.1134/S1087659606050129 doi (NATIONALLICENCE)springer-10.1134/S1087659606050129 Influence of the preparation technique on the resistance of the PbSe + PbSeO3 two-phase composite [Elektronische Daten] [V. Tomaev, V. Miroskhkin, L. Gar'kin] An anomalous change in the electrical conductivity near the phase transition temperature (343 K) is revealed in a PbSe + PbSeO3 two-phase polycrystalline composite. It is demonstrated that the observed effect can be used in the design of chemical gas sensors, in which the chemisorption of a reducing or oxidizing gas on the surface of the PbSe + PbSeO3 composite should lead to a significant change in the electrical conductivity at temperatures close to the phase transition point. The PbSe + PbSeO3 composite is studied by impedance spectroscopy in the temperature range 293-393 K in a dry air atmosphere. It is found that the interaction of the sample with air oxygen under the controlled joint action of an ac electric field and heat can lead to both reversible and irreversible changes in the electrical conductivity. Pleiades Publishing, Inc., 2006 Tomaev V. St. Petersburg State University of Electrical Engineering (LETI), ul. Professora Popova 5, 197376, St. Petersburg, Russia aut Miroskhkin V. St. Petersburg State University of Electrical Engineering (LETI), ul. Professora Popova 5, 197376, St. Petersburg, Russia aut Gar'kin L. St. Petersburg State University of Electrical Engineering (LETI), ul. Professora Popova 5, 197376, St. Petersburg, Russia aut Glass Physics and Chemistry Nauka/Interperiodica 32/5(2006-10-01), 579-582 1087-6596 32:5<579 2006 32 10720 https://doi.org/10.1134/S1087659606050129 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1087659606050129 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tomaev V. St. Petersburg State University of Electrical Engineering (LETI), ul. Professora Popova 5, 197376, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Miroskhkin V. St. Petersburg State University of Electrical Engineering (LETI), ul. Professora Popova 5, 197376, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Gar'kin L. St. Petersburg State University of Electrical Engineering (LETI), ul. Professora Popova 5, 197376, St. Petersburg, Russia aut NATIONALLICENCE 773 0- Glass Physics and Chemistry Nauka/Interperiodica 32/5(2006-10-01), 579-582 1087-6596 32:5<579 2006 32 10720 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer