Reduced leakage current and large polarization of Na0.5Bi0.5Ti0.98Mn0.02O3 thin film annealed at low temperature

Feng, Chao; Yang, Changhong; Li, S.X; Han, Ya-jie; Hu, Xiaodong; Jiao, Feipeng; Qian, Jin; Du, X. B.

doi:10.1016/j.ceramint.2015.07.041

Cited by 14 publications

(6 citation statements)

References 27 publications

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“…The sol–gel method was used to fabricate Sr 1– x (Na 0.5 Bi 0.5 ) x Ti 0.99 Mn 0.01 O 3 ( x = 0, 0.005, 0.01, and 0.02) thin films on the Pt/Ti/SiO 2 /Si substrate. To improve electric resistivity, appropriate manganese was doped in thin films. ,, The detailed experimental description for preparing thin films has been reported in our previous papers. The test method is also the same as our previous papers. ,, The only difference is that the annealing temperature is 625 °C.…”

Section: Methodsmentioning

confidence: 99%

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Perovskite Sr_1–x(Na_0.5Bi_0.5)_xTi_0.99Mn_0.01O₃ Thin Films with Defect Dipoles for High Energy-Storage and Electrocaloric Performance

Zhang

Wang

et al. 2019

ACS Appl. Mater. Interfaces

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Dielectric capacitors have received more and more attention because of fast charge/discharge capability. However, the energy-storage performance still cannot meet the demand. In this work, lead-free perovskite Sr1–x (Na0.5Bi0.5) x Ti0.99Mn0.01O3 (x = 0, 0.005, 0.01, and 0.02) thin films prepared by the sol–gel method were carefully studied. Defect dipoles and local lattice distortion were created by doping Mn at the B-site, enabling ferroelectric polarization behavior. To further enhance polarization, co-substitution at the A-site was adopted. Na+ and Bi3+ can make up Na+–Bi3+ ion pairs. Meanwhile, off-center NaSr + and BiSr 3+ ions with a small radius can lead to the distortion of the octahedral [TiO6] in the lattice to induce local polarization regions. Under the combined action of A-site and B-site doping, polarization and breakdown strength were greatly improved. Finally, a high energy density (53 J cm–3) and good thermal stability were achieved. Furthermore, the negative electrocaloric effect was also achieved. The adiabatic temperature change is about −8.5 at 300 K. This work demonstrates that the Sr0.99(Na0.5Bi0.5)0.01(Ti0.99Mn0.01)O3 thin film with excellent energy-storage performance and the negative electrocaloric effect is a promising multifunctional material.

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Section: Methodsmentioning

confidence: 99%

“…To improve electric resistivity, appropriate manganese was doped in thin films. 36,60,61 The detailed experimental description for preparing thin films has been reported in our previous papers. The test method is also the same as our previous papers.…”

Section: ■ Methodsmentioning

confidence: 99%

Perovskite Sr_1–x(Na_0.5Bi_0.5)_xTi_0.99Mn_0.01O₃ Thin Films with Defect Dipoles for High Energy-Storage and Electrocaloric Performance

Zhang

Wang

et al. 2019

ACS Appl. Mater. Interfaces

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“…The volatilization of Bi and Na and variable valence of Ti are easy to generate oxygen vacancy for BNT-based thin films resulting in a large leakage current. Single mental oxides (MnO 2 [101,102], Fe 2 O 3 [103], etc.) are used to modify BNT films, which would form different defect complexes to compensate charge balance and suppress oxygen vacancy migration.…”

Section: Lead-free Relaxor Ferroelectric Ceramicsmentioning

confidence: 99%

Progress and perspectives in dielectric energy storage ceramics

Zeng

et al. 2021

J Adv Ceram

220

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Dielectric ceramic capacitors, with the advantages of high power density, fast charge-discharge capability, excellent fatigue endurance, and good high temperature stability, have been acknowledged to be promising candidates for solid-state pulse power systems. This review investigates the energy storage performances of linear dielectric, relaxor ferroelectric, and antiferroelectric from the viewpoint of chemical modification, macro/microstructural design, and electrical property optimization. Research progress of ceramic bulks and films for Pb-based and/or Pb-free systems is summarized. Finally, we propose the perspectives on the development of energy storage ceramics for pulse power capacitors in the future.

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“…Manganese doping is widely acknowledged as an effective method for ameliorating the detrimental effects of element volatilization in NBT-based films [12][13][14]. For instance, it has been demonstrated that Mn-doped NBT films have leakage current densities up to four orders of magnitude lower than those observed in pure NBT films [12].…”

Section: Introductionmentioning

confidence: 99%

Effects of Mn doping on the conduction mechanism and dielectric nonlinearity of Na_0.5Bi_0.5TiO₃ thin film

Liang,

Shen,

Wang

et al. 2024

J. Phys. D: Appl. Phys.

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In this work, the conduction mechanism and dielectric nonlinearity of undoped and Mn-doped Na0.5Bi0.5TiO3 (NBT) films were investigated. The potential conduction mechanism in relatively low electric field region should be dominated by the Hopping conduction rather than the typical Ohmic conduction. In high electric field region, the conduction mechanism was dominated by P-F and Schottky emission. The enhancement of electrical insulation of NBT film after Mn doping was shown to be result from the decrease in oxygen vacancy and the elevation of conduction energy barrier. Furthermore, significant improvements in the nonlinearity of both the dielectric constant and polarization of Mn-doped NBT film were observed, as indicated by the results of Rayleigh fitting and first-order reversal curve (FORC) distributions. Such enhancements were attributed to the reduced in domain wall pinning, decreased interference of electrostatic potential and improved leakage characteristic.

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Reduced leakage current and large polarization of Na0.5Bi0.5Ti0.98Mn0.02O3 thin film annealed at low temperature

Cited by 14 publications

References 27 publications

Perovskite Sr_1–x(Na_0.5Bi_0.5)_xTi_0.99Mn_0.01O₃ Thin Films with Defect Dipoles for High Energy-Storage and Electrocaloric Performance

Perovskite Sr_1–x(Na_0.5Bi_0.5)_xTi_0.99Mn_0.01O₃ Thin Films with Defect Dipoles for High Energy-Storage and Electrocaloric Performance

Progress and perspectives in dielectric energy storage ceramics

Effects of Mn doping on the conduction mechanism and dielectric nonlinearity of Na_0.5Bi_0.5TiO₃ thin film

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Reduced leakage current and large polarization of Na0.5Bi0.5Ti0.98Mn0.02O3 thin film annealed at low temperature

Cited by 14 publications

References 27 publications

Perovskite Sr1–x(Na0.5Bi0.5)xTi0.99Mn0.01O3 Thin Films with Defect Dipoles for High Energy-Storage and Electrocaloric Performance

Perovskite Sr1–x(Na0.5Bi0.5)xTi0.99Mn0.01O3 Thin Films with Defect Dipoles for High Energy-Storage and Electrocaloric Performance

Progress and perspectives in dielectric energy storage ceramics

Effects of Mn doping on the conduction mechanism and dielectric nonlinearity of Na0.5Bi0.5TiO3 thin film

Contact Info

Product

Resources

About

Perovskite Sr_1–x(Na_0.5Bi_0.5)_xTi_0.99Mn_0.01O₃ Thin Films with Defect Dipoles for High Energy-Storage and Electrocaloric Performance

Perovskite Sr_1–x(Na_0.5Bi_0.5)_xTi_0.99Mn_0.01O₃ Thin Films with Defect Dipoles for High Energy-Storage and Electrocaloric Performance

Effects of Mn doping on the conduction mechanism and dielectric nonlinearity of Na_0.5Bi_0.5TiO₃ thin film