Large tunability properties of (Ba0.91Ca0.09)(Zr0.2Ti0.8)O3-x mol% CuO ceramics under bias of domain switching effect

Yang, Pan; Zhao, Le; Zheng, Haoran; Wang, Bo; Zhang, Lijuan; Yu, Shihui

doi:10.1007/s10854-023-10121-6

Cited by 1 publication

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“…To satisfy the requirements of the above devices, dielectrics with large dielectric tunability, low dielectric loss, and high breakdown strength (BDS) are essential [5−7]. To achieve high dielectric tunability and low dielectric loss simultaneously, the figure of merit (FOM), defined as FOM = tunability/tanδ, is generally introduced to characterize the tunable performance [8,9]. Furthermore, breakdown strength is considered another important parameter for power equipment with desired tunable properties [10,11].…”

Section: Introductionmentioning

confidence: 99%

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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%

“…FOM, which considers both dielectric tunability and dielectric loss, is a commonly used parameter for comprehensively estimating tunable properties, as expressed by Eq. ( 6) [8,9]. The FOM values for all samples are calculated and displayed in Fig.…”

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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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show abstract

Large tunability properties of (Ba0.91Ca0.09)(Zr0.2Ti0.8)O3-x mol% CuO ceramics under bias of domain switching effect

Cited by 1 publication

References 41 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

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Large tunability properties of (Ba0.91Ca0.09)(Zr0.2Ti0.8)O3-x mol% CuO ceramics under bias of domain switching effect

Cited by 1 publication

References 41 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

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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