Enhanced electrocaloric and pyroelectric response from ferroelectric multilayers
| Autor: | Kesim, MT, Zhang, J, Alpay, SP, Martin, LW |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Kesim, MT; Zhang, J; Alpay, SP; & Martin, LW. (2014). Enhanced electrocaloric and pyroelectric response from ferroelectric multilayers. Applied Physics Letters, 105(5). doi: 10.1063/1.4892455. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/0v1174pm Applied Physics Letters, vol 105, iss 5 |
| DOI: | 10.1063/1.4892455. |
| Popis: | Room temperature pyroelectric properties and adiabatic temperature change of (001)-textured ferroelectric multilayers on Si are computed by taking into account electrostatic interlayer interactions and thermal strains. We show that by adjusting internal electrical fields through changing relative thicknesses in a multilayer ferroelectric construct, electrothermal properties can be significantly enhanced. A quantitative analysis is provided for BaTiO 3-PbZr0.2Ti0.8O3 (BTO-PZT) and SrTiO3-PbZr0.2Ti0.8O3 (STO-PZT) multilayers. For instance, 0.74×BTO-0.26×PZT and 0.35×STO-0.65×PZT bilayers show ∼120% and 65% increase in electrocaloric response, respectively, compared to PZT films on Si for Δ E=500kV/cm. © 2014 AIP Publishing LLC. |
| Databáze: | OpenAIRE |
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