Enhanced dielectric tunability and reduced dielectric loss in various donor–acceptor co-doped Ba0.675Sr0.325TiO3 ceramics

Liu, Wenfeng; Zhao, Yi; Jin, Yihang; Kong, Fanyi; Gao, Jinghan; Li, Shengtao

doi:10.1016/j.matchemphys.2022.126702

Cited by 7 publications

(2 citation statements)

References 59 publications

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“…In the semisolution method, additives are converted to the aqueous form of soluble metallic salt while the raw matrix materials remain in the solid form. More uniform grain boundaries and element distributions were achieved in the ZnO ceramics, resulting in enhanced electrical properties such as breakdown strength, energy discharge capability, and withstanding capacity [41].…”

Section: Introductionmentioning

confidence: 99%

Lead-free (Ba,Sr)TiO ₃-based ceramics with superior tunable properties by the semi-solution method

Zhao,

Liu,

Ran

et al. 2024

Journal of Advanced Ceramics

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High-performance dielectric tunable materials with both high dielectric tunability and low dielectric loss are urgently needed for new-generation electronic tunable devices. In the present study, a new system, (Ba 0.675 Sr 0.325 ) 1−x La x Ti 1−x Mn x O 3 (x = 0.25%, 0.5%, 0.75%, and 1.0%), was designed. The acceptor dopant Mn was added to lower dielectric loss, while the donor dopant La was introduced to enhance dielectric tunability. The samples were prepared using the conventional solid-state (CS) reaction method and the semisolution (SS) method. The experimental results showed that the morphology of the ceramics was optimized by further improving the processing procedure. Dense microstructures, homogeneous grains, and uniform dopant distributions could be achieved successfully by the semisolution method. Moreover, a significant enhancement in the tunable properties was realized owing to the improved microstructure mentioned above. The optimum tunable properties occurred in the samples prepared by the semi-solution method at x = 0.75%, with a high dielectric tunability of 85.0%, a low dielectric loss of 0.0011, and an excellent figure of merit (FOM) of 773. The tunable properties of (Ba,Sr)TiO 3 (BST) ceramics were even superior to those of lead-based materials, with an FOM of approximately 700. All the results suggested that the semi-solution method rendered BST ceramics more promising for applications in tunable devices.

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Section: Introductionmentioning

confidence: 99%

Lead-free (Ba,Sr)TiO ₃-based ceramics with superior tunable properties by the semi-solution method

Zhao,

Liu,

Ran

et al. 2024

Journal of Advanced Ceramics

Self Cite

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“…In recent years, Ba 1−x Sr x TiO 3 (BST) perovskite ceramics, as well as their derivatives, have been very widely investigated for energy storage, and BST ceramics are considered to be the most promising ceramic material for lead-free energy storage [1][2][3]. By doping and modifying BaTiO 3 with different amounts of Sr, a series of BST ceramics with continuously adjustable properties can be obtained [4][5][6][7][8][9]. They have been widely used in electronic devices such as high-voltage ceramic capacitors, multilayer ceramic capacitors (MLCCs), and ferroelectric thin-film memories.…”

Section: Introductionmentioning

confidence: 99%

High-Permittivity and Bias-Voltage-Insensitive (Ba,Sr,Ca)TiO3·0.03(Bi2O3·3TiO2) Ceramics with Y5U Specification

Li,

Yao,

Hao

et al. 2023

Crystals

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Class II ceramics are a material with high permittivity but low reliability of their capacitance and bias voltage due to high the temperature sensitivity of their dielectric permittivity. In this work, a BST-based (Ba0.9−xSrxCa0.1)TiO3·0.03(Bi2O3·3TiO2) (x = 0.2, 0.25, 0.3, 0.35, 0.4) composition with Y5U characteristics was investigated through compositional control to develop high-permittivity and voltage-stable ceramic compositions. Sr doping can increase the breakdown strength (Eb) but decreases the Curie temperature (Tc). The composition at x = 0.3 can obtain optimal comprehensive electrical properties, with high permittivity of 4206, low dielectric loss of ~0.009, and moderate breakdown strength (Eb) of 77.6 kV/cm, which meets Y5U specifications. Typically, a low bias-voltage dependence of capacitance is confirmed with a variation rate of 7.64% under 20 kV/cm. This strategy provides a promising candidate for high-permittivity Class II ceramic dielectrics that can be used in this field.

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Effects of multiple sintering additives on crystal structure, morphology and tunable mechanisms of BCZT ceramics

Yang,

Zhao,

Shi

et al. 2024

J Mater Sci

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Enhanced dielectric tunability and reduced dielectric loss in various donor–acceptor co-doped Ba0.675Sr0.325TiO3 ceramics

Cited by 7 publications

References 59 publications

Lead-free (Ba,Sr)TiO ₃-based ceramics with superior tunable properties by the semi-solution method

Lead-free (Ba,Sr)TiO ₃-based ceramics with superior tunable properties by the semi-solution method

High-Permittivity and Bias-Voltage-Insensitive (Ba,Sr,Ca)TiO3·0.03(Bi2O3·3TiO2) Ceramics with Y5U Specification

Effects of multiple sintering additives on crystal structure, morphology and tunable mechanisms of BCZT ceramics

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Enhanced dielectric tunability and reduced dielectric loss in various donor–acceptor co-doped Ba0.675Sr0.325TiO3 ceramics

Cited by 7 publications

References 59 publications

Lead-free (Ba,Sr)TiO 3-based ceramics with superior tunable properties by the semi-solution method

Lead-free (Ba,Sr)TiO 3-based ceramics with superior tunable properties by the semi-solution method

High-Permittivity and Bias-Voltage-Insensitive (Ba,Sr,Ca)TiO3·0.03(Bi2O3·3TiO2) Ceramics with Y5U Specification

Effects of multiple sintering additives on crystal structure, morphology and tunable mechanisms of BCZT ceramics

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Product

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About

Lead-free (Ba,Sr)TiO ₃-based ceramics with superior tunable properties by the semi-solution method

Lead-free (Ba,Sr)TiO ₃-based ceramics with superior tunable properties by the semi-solution method