Article ID Journal Published Year Pages File Type
1811904 Physica B: Condensed Matter 2011 6 Pages PDF
Abstract

BaMnO3 nanorods were synthesized at 200 °C and atmospheric pressure using the composite-hydroxide mediated method. X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy were used to investigate the structure, size, morphology, phase purity and elemental composition of BaMnO3 nanorods. Electrical characterization of BaMnO3 pellet was performed at 300–400 K and in the frequency range 200 Hz–2 MHz. Temperature dependence of AC conductivity suggests that the BaMnO3 pellet behaves as a semiconducting material and conduction across the pellet can be explained by the correlated barrier hopping model. Impedance analysis was performed using the equivalent circuit model (R1Q1C1)(R2C2) and it suggests a single relaxation process in the BaMnO3 pellet at a particular temperature. The analysis reveals that the BaMnO3 pellet behaves like an n-type semiconductor material due to the presence of oxygen vacancies and some disorder. Modulus spectroscopy also supports the impedance results.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
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