Dielectric relaxation and current conduction mechanism of Tb and Mn codoped bismuth ferrite grafted poly (vinyl alcohol) nanocomposite film
| Autor: | Ajit Kumar Meikap, Monalisa Halder |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Technology
Vinyl alcohol Materials science TP1-1185 02 engineering and technology Dielectric dielectric response 01 natural sciences chemistry.chemical_compound nanocomposite film Current conduction 0103 physical sciences charge conduction mechanism General Materials Science Composite material Bismuth ferrite 010302 applied physics Nanocomposite Chemical technology 021001 nanoscience & nanotechnology Condensed Matter Physics magnetocapacitance chemistry Relaxation (physics) 0210 nano-technology |
| Zdroj: | Reviews on Advanced Materials Science, Vol 59, Iss 1, Pp 425-433 (2020) |
| ISSN: | 1605-8127 |
| DOI: | 10.1515/rams-2020-0040 |
| Popis: | Investigation on current conduction mechanism through Tb and Mn codoped Bismuth Ferrite grafted polyvinyl alcohol (BTFMO-PVA) nanocomposite film above room temperature (300 K – 415 K) is reported here in detail. A detailed study on dielectric properties of the sample is done over a wide temperature range in a frequency range of 20 Hz - 2MHz. The conduction is attributed to correlated barrier hopping model. Bipolaron hopping dominates over single-polaron hopping in this system. Complex electric modulus spectra and complex modulus spectra are well explained by suitable models to understand the effective dielectric response. The sample responds to the externally applied magnetic field exhibiting negative magnetocapacitance at room temperature. |
| Databáze: | OpenAIRE |
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