Excellent dielectric properties and enhanced temperature stability of CaZrO3-modified BaTiO3 ceramic capacitors

Han, Xiao; Zhao, Lili; Zhang, Zhi’ang; Zhang, Jingru; Jin, Quan; Xu, Ruoxin; Cui, Bin; Lei, Xuegong

doi:10.1007/s10854-020-03859-w

Cited by 8 publications

(3 citation statements)

References 31 publications

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“…Controlling chemistry and geometry has thus emerged as a key strategy for enhancing the characteristics of BaTiO 3. Through the use of dopants, solid solutions, and fabrication techniques, numerous kinds of perovskite lead-free dielectrics have recently been used to modify the chemical structure or topology of ceramics [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Modification of structural, morphological, and dielectric properties of barium calcium titanate ceramics with yttrium addition

Sumona,

Al Mahmood,

Islam

et al. 2024

Heliyon

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Section: Introductionmentioning

confidence: 99%

Modification of structural, morphological, and dielectric properties of barium calcium titanate ceramics with yttrium addition

Sumona,

Al Mahmood,

Islam

et al. 2024

Heliyon

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“…Combining BTO with other materials could help to improve its electrical properties by increasing its dielectric constant and/or magnetic characteristics by enhancing its magnetisation. Some of compositing materials could be listed as: dielectric material CaZrO 3 [16], ferromagnetic materials (NiCo)Fe 2 O 4 [17,18], La 0.8 Sr 0.2 MnO 3 [19], etc. However, La 1.5 Sr 0.5 NiO 4 (LSNO) material as a doping agent to BTO background has rarely been studied, even though its excellent properties as microwave absorbers were proved.…”

Section: Introductionmentioning

confidence: 99%

Multiferroic characteristics and microwave absorption properties of La_1.5Sr_0.5NiO₄/BaTiO₃ nanocomposites

Thành¹,

Lam²,

Linh³

et al. 2022

Adv. Nat. Sci: Nanosci. Nanotechnol.

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As-prepared samples of La1.5Sr0.5NiO4 (LSNO) and BaTiO3 (BTO) were prepared by ball milling method combined with heat treatment. X-ray diffraction analysis showed the pure phases of LSNO with a tetragonal structure and BTO with a cubic structure. Average crystalline sizes were 15 and 35 nm for the LSNO and BTO samples, respectively. Lattice parameters of LSNO and BTO were almost unchanged after compositing, indicating no diffusion or chemical reaction between them during the compositing process. Adding LSNO to the BTO-based material significantly improved the ferroelectric and ferromagnetic properties, contributing to the enhancement of the electrical polarisation of the composites. These enhancements also boosted the microwave absorption performance of the composites. In detail, 20LSNO/80BTO nanocomposite embedded in acrylic paint could achieve the reflection loss up to −27 dB, meaning 99.8% of the incident microwave being absorbed. This absorber could also reach absorptivity over 60% for almost the whole range of the K u band frequency, which proved that 20LSNO/80BTO nanocomposite could be used as a good microwave absorber for practical applications.

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“…Today, several methods are used to produce powders with nanometer dimensions. These methods are: solid state [18], precipitation [19], hydrothermal [20] and sol-gel method [9,21]. In this study, CaZrO 3 :xEu 3+ phosphors were produced by sol-gel auto combustion method in low temperature and the optical properties were investigated.…”

Section: Introductionmentioning

confidence: 99%

Studies on the photoluminescence and thermoluminescence properties of CaZrO3:xEu3+ phosphor for dosimetric application

Fesharaki

Jalali

Karimi

et al. 2021

Preprint

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Series of CaZrO3:xEu3+ (x=0.01, 0.02, 0.03, 0.04 and 0.05) phosphors have been prepared by low temperature sol-gel auto combustion method. The structure and morphology of the samples were investigated by X-ray diffraction (XRD) and field-emission scanning electron microscope (FE-SEM). The energy-dispersive X-ray spectroscope (EDX) was employed to analyze the elemental composition of the phosphor. The XRD patterns indicated that the sample was single phase at 350 ◦C with a perovskite structure. The optimum temperature for the single- phase and crystalline phosphors of CaZrO3:xEu3+ was 700 ◦C. Study of photoluminescence (PL) at room temperature showed that the phosphors can be excited by light with a wavelength of 391 nm. The results of emission spectrum showed that the red luminescence of CaZrO3:xEu3+ due to electric dipole transition of 5D0→7F2 was dominant at wavelength of 615 nm and weaker transition at wavelength of 590 nm which was due to magnetic dipole transition of 5D0→7F1. For the thermoluminescence (TL) study the prepared sample irradiated by X-ray lamp, the TL curve was then recorded at fixed heating rate of 2 ◦C/s. The TL glow curve showed well single peak at a temperature of 165 ◦C. The effect of Eu3+ concentration at fixed X-ray exposure time was studied and maximum TL occurred at x=0.02. Also the variation of TL intensity with X-ray time (5 to 15 min) showed linear response with dose. The TL glow peak shows more stability and less fading in prepared phosphor which is suitable for TL dosimetry.

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Excellent dielectric properties and enhanced temperature stability of CaZrO3-modified BaTiO3 ceramic capacitors

Cited by 8 publications

References 31 publications

Modification of structural, morphological, and dielectric properties of barium calcium titanate ceramics with yttrium addition

Modification of structural, morphological, and dielectric properties of barium calcium titanate ceramics with yttrium addition

Multiferroic characteristics and microwave absorption properties of La_1.5Sr_0.5NiO₄/BaTiO₃ nanocomposites

Studies on the photoluminescence and thermoluminescence properties of CaZrO3:xEu3+ phosphor for dosimetric application

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Excellent dielectric properties and enhanced temperature stability of CaZrO3-modified BaTiO3 ceramic capacitors

Cited by 8 publications

References 31 publications

Modification of structural, morphological, and dielectric properties of barium calcium titanate ceramics with yttrium addition

Modification of structural, morphological, and dielectric properties of barium calcium titanate ceramics with yttrium addition

Multiferroic characteristics and microwave absorption properties of La1.5Sr0.5NiO4/BaTiO3 nanocomposites

Studies on the photoluminescence and thermoluminescence properties of CaZrO3:xEu3+ phosphor for dosimetric application

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Multiferroic characteristics and microwave absorption properties of La_1.5Sr_0.5NiO₄/BaTiO₃ nanocomposites