Tailoring the dielectric and energy storage properties in BaTiO3/BaZrO3 superlattices

Benyoussef, Manal; Belhadi, Jamal; Lahmar, Abdelilah; Marssi, M. El

doi:10.1016/j.matlet.2018.09.123

Cited by 26 publications

(13 citation statements)

References 12 publications

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“…These results are strongly linked to the interfaces size for both samples. Indeed, the average inter-diffusion interfaces was found to cover 8 to 12% and 9 to 11% of the total thickness of the BTBZ03 and BTBZ09 samples respectively, which could affect significantly the physical properties of the material as reported in our earlier investigation, where the dielectric permittivity was found to be strongly affected by the SL period [51]. This could be explained by the presence of a large number of inter-diffusion interfaces due to the small period as the capacitance of the entire SL material is a series of capacitances of BT layer, BZ layer and BT/BZ interfaces.…”

Section: Strain Analysessupporting

confidence: 53%

Quantification and mapping of elastic strains in ferroelectric [BaZrO3]xᴧ/[BaTiO3](1-x)ᴧ superlattices

Belhadi

Ravaux

Bouyanfif

et al. 2020

Applied Surface Science

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We report on quantification and elastic strain mapping in two artificial [BaZrO 3 ] xᴧ /[BaTiO 3 ] (1-x)ᴧ (BZ xᴧ /BT (1-x)ᴧ) superlattices having periods of Λ=6.6 nm and Λ = 11 nm respectively, grown on (001) SrTiO 3 single crystal substrate by pulsed laser deposition technique. The methodology consists of a combination of high-resolution scanning transmission electron microscopy and nanobeam electron diffraction associated with dedicated algorithm for diffraction patterns processing originally developed for semiconductors to record the strains at atomic scale. Both in-plane and out-of-plane elastic strains were then determined at 2 nm spatial resolution and their average values were used to map the strains along and transverse to the epitaxial growth direction of both samples to determine its variation along several BZ/BT interfaces. In addition, the variation of the width of the inter-diffusion BT/BZ interfaces and intermixing between different layers are estimated. The obtained width average value measured in these inter-diffusion interfaces vary from 8 to 12% and from 9 to 11% for both superlattices having Λ = 6.6 nm and Λ = 11 nm respectively. These inter-diffusion interfaces and the inherent elastic strains due to the confined layers of the superlattices are known to be the most important parameters, responsible of the change in their functional properties.

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Section: Strain Analysessupporting

confidence: 53%

Quantification and mapping of elastic strains in ferroelectric [BaZrO3]xᴧ/[BaTiO3](1-x)ᴧ superlattices

Belhadi

Ravaux

Bouyanfif

et al. 2020

Applied Surface Science

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“…Recently, new emerging applications of BZT-based compounds, such as electrocaloric cooling systems or energy storage capacitors, have received a large number of publications. [23][24][25][26][27][28][29][30][31][32] Doping in BZT ceramics has become a popular way to enhance the performance of the material. [33][34][35][36][37] The dopant inserted into the BZT plays a crucial role in compensating the defects created in the perovskite structure.…”

Section: Introductionmentioning

confidence: 99%

Impact of rare earth (RE³⁺ = La³⁺, Sm³⁺) substitution in the A site perovskite on the structural, and electrical properties of Ba(Zr_0.9Ti_0.1)O₃ ceramics

et al. 2022

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“…The energy storage properties can be calculated through the polarization–electric field ( P – E ) hysteresis loops. , , and η = W rec / W , where W , W rec , and η are the energy storage density, recoverable energy storage density, and energy storage efficiency, respectively, − while the E , P max , and P r represent the applied electric field, maximum polarization, and remnant polarization, respectively. Dielectric materials showing slim P – E loops would more easily obtain the large energy density and efficiency .…”

Section: Introductionmentioning

confidence: 99%

Effective Strategy to Achieve Excellent Energy Storage Properties in Lead-Free BaTiO₃-Based Bulk Ceramics

Dai

Xie

Liu

et al. 2020

ACS Appl. Mater. Interfaces

200

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Although extensive studies have been done on lead-free dielectric ceramics to achieve excellent dielectric behaviors and good energy storage performance, the major problem of low energy density has not been solved so far. Here, we report on designing the crossover relaxor ferroelectrics (CRFE), a crossover region between the normal ferroelectrics and relaxor ferroelectrics, as a solution to overcome the low energy density. CRFE exhibits smaller free energy and lower defect density in the modified Landau theory, which helps to obtain ultrahigh energy density and efficiency. The (1–x)Ba0.65Sr0.35TiO3–xBi(Mg2/3Nb1/3)O3 ((1–x)BST–xBMN) (x = 0, 0.08, 0.1, 0.18, 0.2) ceramic was synthesized by a solid-state reaction method. The solid solutions exhibit dielectric frequency dispersion, which suggests typical relaxor characteristics with the increasing BMN content. The crossover ferroelectrics of 0.9BST–0.1BMN ceramic possesses a high energy storage efficiency (η) of 85.71%, a high energy storage density (W) of 3.90 J/cm3, and an ultrahigh recoverable energy storage density (W rec) of 3.34 J/cm3 under a dielectric breakdown strength of 400 kV/cm and is superior to other lead-free BaTiO3 (BT)-based energy storage ceramics. It also exhibits strong thermal stability in the temperature range from 25 to 150 °C under an electric field of 300 kV/cm, with the fluctuations below 3% and with the energy storage density and energy efficiency at about 2.8 J/cm3 and 82.93%, respectively. The enhanced recoverable energy density and breakdown strength of BT-based materials with significantly high energy efficiency make it a promising candidate to meet the wide requirements for high power applications.

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Tailoring the dielectric and energy storage properties in BaTiO3/BaZrO3 superlattices

Cited by 26 publications

References 12 publications

Quantification and mapping of elastic strains in ferroelectric [BaZrO3]xᴧ/[BaTiO3](1-x)ᴧ superlattices

Quantification and mapping of elastic strains in ferroelectric [BaZrO3]xᴧ/[BaTiO3](1-x)ᴧ superlattices

Impact of rare earth (RE³⁺ = La³⁺, Sm³⁺) substitution in the A site perovskite on the structural, and electrical properties of Ba(Zr_0.9Ti_0.1)O₃ ceramics

Effective Strategy to Achieve Excellent Energy Storage Properties in Lead-Free BaTiO₃-Based Bulk Ceramics

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Tailoring the dielectric and energy storage properties in BaTiO3/BaZrO3 superlattices

Cited by 26 publications

References 12 publications

Quantification and mapping of elastic strains in ferroelectric [BaZrO3]xᴧ/[BaTiO3](1-x)ᴧ superlattices

Quantification and mapping of elastic strains in ferroelectric [BaZrO3]xᴧ/[BaTiO3](1-x)ᴧ superlattices

Impact of rare earth (RE3+ = La3+, Sm3+) substitution in the A site perovskite on the structural, and electrical properties of Ba(Zr0.9Ti0.1)O3 ceramics

Effective Strategy to Achieve Excellent Energy Storage Properties in Lead-Free BaTiO3-Based Bulk Ceramics

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Product

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Impact of rare earth (RE³⁺ = La³⁺, Sm³⁺) substitution in the A site perovskite on the structural, and electrical properties of Ba(Zr_0.9Ti_0.1)O₃ ceramics

Effective Strategy to Achieve Excellent Energy Storage Properties in Lead-Free BaTiO₃-Based Bulk Ceramics