We grew lead-free BaZrTiO (BZT)/BaCaTiO (BCT) epitaxial heterostructures and studied their structural, dielectric, ferroelectric and energy density characteristics. The BZT/BCT epitaxial heterostructures were grown on SrRuO (SRO) buffered SrTiO (STO) single crystal substrate by optimized pulsed laser deposition (PLD) technique. These high-quality nanostructures exhibit high dielectric permittivity (∼1300), slim electric field-dependent polarization (P-E) curve with high saturation polarization (∼100 µC/cm) and low remnant polarization (∼20 µC/cm) through interface engineering to develop new lead-free ferroelectric system for energy storage devices. We observe an ultrahigh discharge and charge energy densities of 42.10 and 97.13 J/cm, respectively, with high efficiency, which might be highly promising for both high power and energy storage electrical devices.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6856528 | PMC |
| http://dx.doi.org/10.1038/s41598-019-53358-0 | DOI Listing |
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