Investigation of Grain, Grain Boundary, and Interface Contributions on the Impedance of Ca<sub>2</sub>FeO<sub>5</sub>
Conductivity properties such as the impedance contributions of grain, grain boundary, and electrode–material interface of brownmillerite-type Ca<sub>2</sub>Fe<sub>2</sub>O<sub>5</sub> are studied using alternate current (AC) impedance at different temperatures ove...
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| Format: | Article |
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MDPI AG
2022-03-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/6/2930 |
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| author | Ram Krishna Hona Gurjot S. Dhaliwal Rajesh Thapa |
| author_facet | Ram Krishna Hona Gurjot S. Dhaliwal Rajesh Thapa |
| author_sort | Ram Krishna Hona |
| collection | DOAJ |
| description | Conductivity properties such as the impedance contributions of grain, grain boundary, and electrode–material interface of brownmillerite-type Ca<sub>2</sub>Fe<sub>2</sub>O<sub>5</sub> 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. |
| first_indexed | 2024-03-09T13:51:47Z |
| format | Article |
| id | doaj.art-1ec4ac72390a4bb6b479939c94b8478d |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T13:51:47Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-1ec4ac72390a4bb6b479939c94b8478d2023-11-30T20:49:09ZengMDPI AGApplied Sciences2076-34172022-03-01126293010.3390/app12062930Investigation of Grain, Grain Boundary, and Interface Contributions on the Impedance of Ca<sub>2</sub>FeO<sub>5</sub>Ram Krishna Hona0Gurjot S. Dhaliwal1Rajesh Thapa2Environmental Science Department, United Tribes Technical College, Bismarck, ND 58504, USAIntertribal Research and Resource Center, United Tribes Technical College, Bismarck, ND 58504, USAFeik School of Pharmacy, University of Incarnate Word, San Antonio, TX 78212, USAConductivity properties such as the impedance contributions of grain, grain boundary, and electrode–material interface of brownmillerite-type Ca<sub>2</sub>Fe<sub>2</sub>O<sub>5</sub> 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.https://www.mdpi.com/2076-3417/12/6/2930brownmilleriteimpedancegraingrain boundary and interface |
| spellingShingle | Ram Krishna Hona Gurjot S. Dhaliwal Rajesh Thapa Investigation of Grain, Grain Boundary, and Interface Contributions on the Impedance of Ca<sub>2</sub>FeO<sub>5</sub> Applied Sciences brownmillerite impedance grain grain boundary and interface |
| title | Investigation of Grain, Grain Boundary, and Interface Contributions on the Impedance of Ca<sub>2</sub>FeO<sub>5</sub> |
| title_full | Investigation of Grain, Grain Boundary, and Interface Contributions on the Impedance of Ca<sub>2</sub>FeO<sub>5</sub> |
| title_fullStr | Investigation of Grain, Grain Boundary, and Interface Contributions on the Impedance of Ca<sub>2</sub>FeO<sub>5</sub> |
| title_full_unstemmed | Investigation of Grain, Grain Boundary, and Interface Contributions on the Impedance of Ca<sub>2</sub>FeO<sub>5</sub> |
| title_short | Investigation of Grain, Grain Boundary, and Interface Contributions on the Impedance of Ca<sub>2</sub>FeO<sub>5</sub> |
| title_sort | investigation of grain grain boundary and interface contributions on the impedance of ca sub 2 sub feo sub 5 sub |
| topic | brownmillerite impedance grain grain boundary and interface |
| url | https://www.mdpi.com/2076-3417/12/6/2930 |
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