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| Format: | Artículo científico |
| Language: | en |
| Published: |
Sociedad Mexicana de Física A.C.
2006
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| Online Access: | https://www.redalyc.org/articulo.oa?id=57028295006 |
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Table of Contents:
- Conductimetric Response linearity in γ' -Bi2 MoO6 C.M.C. Vera R. Aragón CINSO CONICET CITEFA Física, Astronomía y Matemáticas Bismuth Molybdates oxygen ionic conduction conductimetric chemical sensors Requisite conditions for electrical conductivity measurements in γ'–Bi2MoO6 are reviewed, to optimize its application as a conductimetric chemical sensor. Constant voltage DC electrical resistivity and AC complex impedance measurements demonstrate that: (1) ohmic behavior is limited to a 50 mV maximum voltage drop; (2) the influence of electrode polarization phenomena may be minimized by low frequency (10 Hz) AC measurements; (3) above 450°C, electrical conduction is dominated by intracrystalline conduction; (4) below this operating temperature, the influence of surface and electronic conduction inhibit sensitivity and selectivity; (5) low frequency AC measurements with 50 mV rms excitation reflect changes in the partial pressure of oxygen. 2006 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57028295006 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.2 Vol.52