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2010 | 117 | 1 | 234-237
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Temperature Sensitive Spinel-Type Ceramics in Thick-Film Multilayer Performance for Environment Sensors

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Temperature sensitive thick films based on spinel-type semiconducting ceramics of different chemical composition Cu_{0.1}Ni_{0.1}Co_{1.6}Mn_{1.2}O_{4} (with p^{+}-types of electrical conductivity), Cu_{0.1}Ni_{0.8}Co_{0.2}Mn_{1.9}O_{4} (with p-types of electrical conductivity) and their multilayer p^{+}-p structures were fabricated and studied. These thick-film elements possess good electrophysical characteristics before and after long-term ageing test at 170°C. It is shown that degradation processes connected with diffusion of metallic Ag into film grain boundaries occur in one-layer p- and p^{+}-conductive thick films. The p^{+}-p structures were of high stability, the relative electrical drift was not greater than 1%.
  • Lviv Institute of Materials of Scientific Research Company "Carat", Stryjska 202, 79031 Lviv, Ukraine
  • Lviv Institute of Materials of Scientific Research Company "Carat", Stryjska 202, 79031 Lviv, Ukraine
  • Lviv Polytechnic National University, Bandera 12, 79013 Lviv, Ukraine
  • Lviv Institute of Materials of Scientific Research Company "Carat", Stryjska 202, 79031 Lviv, Ukraine
  • Institute of Physics of Jan Długosz University of Czestochowa, al. Armii Krajowej 13/15, 42-201 Częstochowa, Poland
  • Fachhochschule Köln/University of Applied Sciences, Betzdorfer 2, 50679 Köln, Germany
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