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Free-volume entities in so-called “free” thick-film structures based on spinel-type Cu0.1Ni0.8Co0.2Mn1.9O4 ceramics are studied for the first time using positron annihilation lifetime spectroscopy. It is shown that two-state positron trapping model is appropriate for an adequate description of changes caused by additional glass phase in these materials. The observed behaviour of defect-related component...
Sensor device multifunctional temperature/humidity sensitive thick-film structures based on spinel-type semiconducting and insulating ceramics of different chemical composition Cu0 1Ni 0 1Co0 6Mn1 2O4 (with p+ -type of electrical conductivity), Cu0 1Ni0 8Co0 2Mn1 9O4 (with p-type of electrical conductivity) and magnesium aluminate i-type MgAl2O4 ceramics were fabricated and investigated. These sensor...
Temperature and humidity-sensitive thick-film structures based on spinel semiconducting ceramics different chemical composition (Cu0.1Ni0.1Co1.6Mn1.2O4 and Cu0.1Ni0.8Co0.2Mn1.9O4) and dielectric magnesium aluminate MgAl2O4 ceramics were fabricated and studied. These elements are shown to be successfully applied for integrated temperature/humidity sensors of environmental monitoring and control.
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