Giant electrocaloric effect and high-field electrostrictive properties in Ba(Ti1−Sn )O3 ceramics

Ma, Xiyu; Shi, Wenjing; Yang, Yule; Аликин, Д. О.; Shur, V. Ya.; Gao, Jinghui; Wei, Xiaoyong; Liu, Gang; Du, Hongliang; Jin, Li

doi:10.1016/j.ceramint.2023.02.225

Cited by 5 publications

(2 citation statements)

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“…28 Consequently, to induce structural changes conducive to application, researchers have opted to incorporate dopants with ionic radii similar to those in BT-based ceramics, such as Ca 2+ , Sr 2+ , Zr 4+ , Sn 4+ , and Hf 4+ , which facilitates the realization of their potential application. 25,[29][30][31][32][33][34] Kaddoussi et al 35 studied Ca 2+ -doped Ba(Zr 0.1 Ti 0.9 ) 0.925 Sn 0.075 O 3 ceramics and reported that doping with Ca ions into BT-based ceramics can improve the magnitude of ∆T and obtained a ∆T of 0.214 K under an electric field of 8 kV/cm. Sanlialp et al studied the electrical properties of Ba(Zr, Ti)O 3 -(Ba, Ca)TiO 3 by direct method and obtained a maximum ∆T of 0.33 K at 20 kV/cm electric field.…”

Section: Introductionmentioning

confidence: 99%

“…Numerous research results indicate that BT‐based ceramics with dielectric peaks close to room temperature (Figure 1E) are usually in the state of coexistence of ferroelectric domains and nanodomains (Figure 1D), which is very helpful to generate large polarization as well as a wide region of the operating temperature near room temperature (Figure 1F). 28 Consequently, to induce structural changes conducive to application, researchers have opted to incorporate dopants with ionic radii similar to those in BT‐based ceramics, such as Ca 2+ , Sr 2+ , Zr 4+ , Sn 4+ , and Hf 4+ , which facilitates the realization of their potential application 25,29–34 . Kaddoussi et al 35 studied Ca 2+ ‐doped Ba(Zr 0.1 Ti 0.9 ) 0.925 Sn 0.075 O 3 ceramics and reported that doping with Ca ions into BT‐based ceramics can improve the magnitude of ∆ T and obtained a ∆ T of 0.214 K under an electric field of 8 kV/cm.…”

Section: Introductionmentioning

confidence: 99%

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Large electrocaloric effect and wide working area in the transition from ferroelectric to nanodomains

Feng,

Hao,

et al. 2024

J Am Ceram Soc.

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A large adiabatic temperature change along with a wide operating temperature region is usually required for the electrocaloric materials to fulfill their refrigeration function. In general, doping foreign ions into BaTiO3 is the frequently utilized strategy in order to obtain excellent electrocaloric materials for the practical application. In the current paper, BaTiO3 lead‐free ferroelectric ceramics were doped by Ca2+ and Sn4+ simultaneously in order to generate a coexistence state at room temperature, where ferroelectric domains and nanodomains exit. As a result, a large polarization and a wide operating temperature range were finally induced. It is found that Ba0.9Ca0.1Ti0.85Sn0.15O3 has a maximum adiabatic temperature change of 0.85 K and an excellent working temperature region (65 K, ∆T > 90% Tmax) was achieved under an electric field of 50 kV/cm. The above phenomenon indicates that the modified BaTiO3 ceramics can be a good potential electrocaloric material in the state of cross‐existence of ferroelectric domains and nanodomains.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Large electrocaloric effect and wide working area in the transition from ferroelectric to nanodomains

Feng,

Hao,

et al. 2024

J Am Ceram Soc.

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Simulation on Critical Frequency of Polymer in Electrostrictive Properties

Wang,

Liu,

Wang

et al. 2024

Macro Theory & Simulations

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The critical frequency and the relaxation time are analyzed through deformation and displacement during electrostriction which is induced by the electrical field at different frequencies. First, when the frequency is 50 Hz and the field strength is 2.5 kV mm−1, the electrostrictive displacement of polyethylene is 6.72 × 10−4 mm. After the data fitting, it is found that the displacement increases linearly with the square of field strength and that the proportional coefficient of 50 Hz is 1.08 × 10−4. Second, due to the influence of relaxation polarization and power loss, with the increase of frequency, the displacement and the proportional coefficient first increases then decreases, and when the frequency is 10 kHz, the displacement of 2.20 × 10−6 mm and the proportional coefficient of 3.51 × 10−7 have minimum values, which are 99.67% and 99.68% lower than that of 50 Hz, respectively. There is the critical frequency. Finally, based on the characteristic of anomalous dispersion, the relaxation time of polyethylene is 9.19 × 10−6s, which is in the time range of thermionic relaxation polarization and consistent with the actual situation. This analysis confirms the quantitative relationship between electrostrictive characteristics, field strength, and polarization. In addition, the relationship between frequency and strain is discussed, and the critical frequency in polymer and the relaxation time are confirmed.

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Structure, dielectric and electrocaloric properties of (Ba0.87Ca0.13(Ti0.9Zr0.1)1 − x (Zn1/3Nb2/3)xO3 ferroelectric ceramics

Ben Abdessalem,

Kriaa,

Sassi

et al. 2024

J Mater Sci: Mater Electron

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Giant electrocaloric effect and high-field electrostrictive properties in Ba(Ti1−Sn )O3 ceramics

Cited by 5 publications

References 74 publications

Large electrocaloric effect and wide working area in the transition from ferroelectric to nanodomains

Large electrocaloric effect and wide working area in the transition from ferroelectric to nanodomains

Simulation on Critical Frequency of Polymer in Electrostrictive Properties

Structure, dielectric and electrocaloric properties of (Ba0.87Ca0.13(Ti0.9Zr0.1)1 − x (Zn1/3Nb2/3)xO3 ferroelectric ceramics

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