Oxygen Resistance Sensor Properties of YB aCo 4 O 7+δ and Y 0.5 Tb 0.5 BaCo 4 O 7+δ
Source abstract
Abstract
The oxygen resistance sensor properties of YB aCo 4 O 7+δ and Y 0.5 Tb 0.5 BaCo 4 O 7+δ ceramic bulk samples as well as Y 0.5 Tb 0.5 BaCo 4 O 7+δ thick film were investigated. The electrical resistance change of the samples in switching O 2 /N 2 atmosphere at constant temperatures 350°C and 385°C was measured in a tube furnace using the standard four‐probe method. The results show that when the atmosphere is shifted from nitrogen to oxygen, the resistance of all samples drops owing to oxygen adsorption. Among the three samples, the Y 0.5 Tb 0.5 BaCo 4 O 7+δ ceramic has the fastest response speed. While the Y 0.5 Tb 0.5 BaCo 4 O 7+δ film has the highest sensitivity, its resistance in N 2 is 3 times more as in O 2 . In addition, the electrical resistance change of the samples was also investigated in a temperature cycle between 350°C and 410°C.
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Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Gas Sensing Nanomaterials and Sensors · Magnetic and transport properties of perovskites and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Physical Engineering and Key Laboratory of Material Physics Zhengzhou University Zhengzhou 450052 China
School of Science and Technology Jiaozuo Teachers College Jiaozuo 454000 China
Funding
Basic and Advanced Technology Research Program of Henan Province of China · Key Program of Science and Technology Research of Henan Educational Committee
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