Synthesis, Structural and dielectric characterization of iron niobate.
Iron niobate. Dielectric characterization. Thyristor. Permittivity.
Iron niobate (FeNbO4) has been applied to the photodiode in solar energy converters,
gas sensors, photo detectors, and electronic devices. However, a full description of your
dielectric properties is still scarceness so. By using a high energy mill, was prepared three
kinds of samples (24, 48 and 72 hours) of precursors. After milling process, the resultant
ponders were to calcinate for precisely 4 hours and in a temperature of 1 300 celsius.
We used a hydraulic press about 1570 Kgf to produce samples. Next, samples were calcinated during a time considered the same for all of them and underwent to dielectric
characterization. In the way to characterize the samples, the formers were submitted to
X rays, scanning electronic microscopy and X rays uorescence. Results have been shown
that samples milling by 24 hours, has 94.48% of FeNbO4 and 5.52% of Fe2O3, by 48h
has 97.82% of FeNbO4 and 2,18% de Fe2O3, and by 72h 93,68% of FeNbO4 and 6.32% of
Fe2O3. Dielectric properties were analyzed through I-V characteristic curves and complex
dialectic permitivity against frequency. Characteristic curves exhibited semiconductors
electronic devices behave like thyristor class. Furthermore, actual work constitutes a fully
new route to sintering iron niobate. Results still indicated the samples have potential
application in the electronic devices.