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DC Field | Value | Language |
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dc.contributor.author | Saurabh, Nishchay | en_US |
dc.contributor.author | Patel, Satyanarayan | en_US |
dc.date.accessioned | 2022-03-17T01:00:00Z | - |
dc.date.accessioned | 2022-03-21T10:51:41Z | - |
dc.date.available | 2022-03-17T01:00:00Z | - |
dc.date.available | 2022-03-21T10:51:41Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Saurabh, N., & Patel, S. (2021). Nonstoichiometric effect on electrocaloric, pyroelectric and energy storage properties of 0.94NaxBiyTiO3–0.06BaTiO3 bulk ceramics. Journal of Materials Science: Materials in Electronics, 32(22), 26871-26893. doi:10.1007/s10854-021-07063-2 | en_US |
dc.identifier.issn | 0957-4522 | - |
dc.identifier.other | EID(2-s2.0-85116069329) | - |
dc.identifier.uri | https://doi.org/10.1007/s10854-021-07063-2 | - |
dc.identifier.uri | https://dspace.iiti.ac.in/handle/123456789/6905 | - |
dc.description.abstract | The effect of nonstoichiometry on the pyroelectric, electrocaloric and energy storage properties in 0.94NaxBiyTiO3–0.06BaTiO3 (y = 0.49, 0.50, 0.51: x = 0.50 and y = 0.50: x = 0.51) bulk ceramics is investigated. The depolarization temperature and ferroelectric-relaxor phase transition vary with stoichiometry. The electrocaloric temperature (∆T) and entropy (∆S) change were calculated by Maxwell relation at different temperatures and electric fields. The 0.94Na0.50Bi0.49TiO3–0.06BaTiO3 showed maximum ∆T and ∆S as 1.2 K and 1.9 J/kgK, respectively at room temperature and 5.5 MV/m. However, Bi sufficient or excess compositions have the large value of ∆T (0.76 K) and ∆S (0.96 J/kgK) in the higher temperature range ~ 397–426 K. The pyroelectric coefficient obtained for stoichiometric composition is 9.4 × 10−4 C/m2K and 87 × 10−4 C/m2K at room temperature and Td, which increases to 10.1 × 10−4 C/m2K and 105 × 10−4 C/m2K, respectively for nonstoichiometric sample. The various pyroelectric figures of merit are calculated for all compositions and found that results are comparable with the previously reported lead-free ceramics. The recoverable energy storage and efficiency are enhanced by 35% (428 to 579 kJ/m3) and 21% (45% to 66%), respectively, when a nonstoichiometric composition is used. Thus, nonstoichiometry is an effective tool to tune pyroelectric, electrocaloric and other properties for the required application. © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Springer | en_US |
dc.source | Journal of Materials Science: Materials in Electronics | en_US |
dc.subject | Barium titanate | en_US |
dc.subject | Energy storage | en_US |
dc.subject | Pyroelectricity | en_US |
dc.subject | Bulk ceramics | en_US |
dc.subject | Depolarization temperature | en_US |
dc.subject | Electrocaloric | en_US |
dc.subject | Energy storage properties | en_US |
dc.subject | Ferroelectric relaxors | en_US |
dc.subject | High temperature range | en_US |
dc.subject | Non-stoichiometry | en_US |
dc.subject | Nonstoichiometric | en_US |
dc.subject | Pyroelectric coefficients | en_US |
dc.subject | Relaxor phasis | en_US |
dc.subject | Electric fields | en_US |
dc.title | Nonstoichiometric effect on electrocaloric, pyroelectric and energy storage properties of 0.94NaxBiyTiO3–0.06BaTiO3 bulk ceramics | en_US |
dc.type | Journal Article | en_US |
Appears in Collections: | Department of Mechanical Engineering |
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