Investigation of Grain, Grain Boundary, and Interface Contributions on the Impedance of Ca2FeO5
Source abstract
Abstract
Conductivity properties such as the impedance contributions of grain, grain boundary, and electrode–material interface of brownmillerite-type Ca2Fe2O5 are studied using alternate current (AC) impedance at different temperatures over a wide range of frequencies. The compound was synthesized at 1000 °C by a solid-state reaction. Powder X-ray diffraction confirmed the pure and single-phase formation. The correlation of the electrical properties with the microstructure of the compound was studied by an AC impedance spectroscopic technique at different temperatures (25–300 °C), which demonstrated the contribution of both the grain (bulk) and grain boundary to the impedance. The frequency-dependent electrical conductivity was used to study the conductivity mechanism. The electric impedance and the frequency at different temperatures supported the suggested conduction mechanism.
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Research context
OpenAlex topics: Multiferroics and related materials · Ferroelectric and Piezoelectric Materials · Dielectric properties of ceramics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Environmental Science Department, United Tribes Technical College, Bismarck, ND 58504, USA
Intertribal Research and Resource Center, United Tribes Technical College, Bismarck, ND 58504, USA
Feik School of Pharmacy, University of Incarnate Word, San Antonio, TX 78212, USA
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