| Author | Search for: Post, Michael1; Search for: Tunney, Jim1; Search for: Yang, Dongfang2; Search for: Du, Xiaomei1; Search for: Singleton, D. |
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| Affiliation | - National Research Council of Canada. NRC Institute for Chemical Process and Environmental Technology
- National Research Council of Canada. NRC Industrial Materials Institute
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| Format | Text, Article |
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| Subject | Perovskite; Thin film; Oxygen sensor; SrFeO2.5+x; SrFeO3 |
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| Abstract | The advantages of applying non-stoichiometric perovskite materials in chemical sensor applications are reviewed and highlighted with particular reference to the SrFeO2.5+x system. The phase relationships of SrFeO2.5+x for (0 < x < 0.5) are described and differences identified with the substituted material, SrFe0.9Cu0.1O2.5+x, such that the prospect of 'tunable' chemical and physical properties is identified. Thin films of the parent perovskite have been prepared by the pulsed laser deposition technique and gas sensor functionality determined by exploiting the effects of gas exposure upon a number of physical properties. There is a large change in the electrical conductivity of SrFeO2.5+x thin-films when exposed to variations in oxygen partial pressure over a wide temperature range as shown in this and previous work. These changes are rapid and reversible at the temperature of the present work at 763 K. The chemical sensing properties of the subject perovskite are compared to two other perovskite materials. Many of the perovskite family of materials in the form of thin-films are well-suited to integration into microsensor devices on various substrate platforms. |
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| Publication date | 1999 |
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| In | |
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| Language | English |
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| NRC number | NRCC 51703 |
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| NPARC number | 12455153 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | b6158a2f-a683-4ecc-b4a7-640b14b911cf |
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| Record created | 2009-10-09 |
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| Record modified | 2020-03-20 |
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