SINTERED ELECTROCONDUCTIVE OXIDE, THERMISTOR ELEMENT USING SINTERED ELECTROCONDUCTIVE OXIDE, AND TEMPERATURE SENSOR USING THERMISTOR ELEMENT

摘要

According to an aspect of the present invention, there is provided a sintered electroconductive oxide containing a perovskite phase of perovskite-type crystal structure represented by the composition formula: M1 a M2 b M3 c Al d Cr e O f where M1 is at least one of elements of group 3A other than La; M2 is at least one of elements of group 2A; M3 is at least one of elements of groups 4A, 5A, 6A, 7A and 8 other than Cr; and a, b, c, d, e and f satisfy the following conditional expressions: 0.600 ‰ a ‰ 1.000 ; 0 ‰ b ‰ 0.400 ; 0.150 ‰ c < 0.600 ; 0.400 ‰ d ‰ 0.800 ; 0 < e ‰ 0.050 ; 0 < e / c + e ‰ 0.18 ; and 2.80 ‰ f ‰ 3.30.
With the use of this conductive oxide sintered body, it becomes possible to carry out proper temperature measurements over the temperature range from a low temperature of -40°C to a high temperature of 900°C or higher.