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Synthesis, characterization of nickel manganite from different carboxylate precursors for thermistor sensors

Posted: 18 Apr 2011 ?? ?Print Version ?Bookmark and Share

Keywords:nickel manganite? carboxylate precursors?

The thermistor sensor is a widely used temperature transducer synthesized with a ceramic-like semiconductor material. Its basic temperature-sensing mechanism is the population of charge carriers in the conduction band. Initially the thermistor was designed for use during World War II, but since then it has continuously evolved for applications such as thermometers, temperature controllers, automatic gain control, and time-delay circuits. Its number of applications is increasing rapidly, encompassing office automation equipment, air conditioners, and other domestic appliances. Recently the thermistor has come into the limelight due to its use in portable phones, car phones, and transceivers. Expanding applications in delicate communications equipment and the rapid influx of such equipment into the consumer market has forced thermistor manufacturers to consider improving the specifications. In this article the authors investigate various thermistor anomalies from a materials point of view.

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