Synthesis and characterization of high performance CaZrO3-doped X8R BaTiO3-based dielectric ceramics

Li, Lingxia; Yu, Jingkun; Liu, Yaran; Zhang, Ning; Chen, Junxiao

doi:10.1016/j.ceramint.2015.03.087

Cited by 17 publications

(2 citation statements)

References 22 publications

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“…It can be observed that the diffraction peaks at 2 θ from 44.9° to 45.3° primarily shifted toward higher degree with the addition of Y 2 O 3 , indicating a shrinkage of the unit cell. However, above the doping level of 0.50 mol% Y 2 O 3 , the corresponding peaks turn to shift toward a lower degree gradually, meaning an expansion of the unit cell . In order to confirm the effect of Y 2 O 3 dopants on the crystal lattice precisely, fine scanning was carried out and the lattice constant c and a , together with the derived unit cell volume for specimens with various Y 2 O 3 content, were calculated from XRD data.…”

Section: Resultsmentioning

confidence: 99%

The Occupation Behavior of Y₂O₃ and Its Effect on the Microstructure and Electric Properties in X7R Dielectrics

et al. 2016

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The occupation behavior of Y 2 O 3 in nonreducible BaTiO 3 -based ceramics was investigated thoroughly. Based on XRD, SEM, TEM-EDS, and complex impedance analysis, it is ensured that there exists two turning points of Y 2 O 3 , 0.50 mol % and 1.00 mol%, and the latter is the solubility limit. Below 0.50 mol%, the introduced Y 3+ ions precede to enter the A sites of the perovskite lattice, causing an observed enhancement in dielectric constant and energy storage density accompanied by an increase in grain size. Once the addition exceeds 0.50 mol%, the Y 3+ ions will turn to occupy B sites to substitute for Ti 4+ ions, leading to the significant reduction in dielectric constant and energy storage density. Above the solubility limit of 1.00 mol%, the excess Y 3+ ions would segregate at grain boundary and even induce the formation of Y 2 Ti 2 O 7 phase, resulting in an abrupt enhancement of grain-boundary resistance. Doped with 0.75-1.50 mol% Y 2 O 3 , all nonreducible specimens meet X7R requirement.

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Section: Resultsmentioning

confidence: 99%

The Occupation Behavior of Y₂O₃ and Its Effect on the Microstructure and Electric Properties in X7R Dielectrics

et al. 2016

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“…BaTiO 3 (BTO), with good ferroelectric properties, has been widely applied in many electronic components and devices, including multilayer capacitors, current control devices, self-controlled heaters, thermistors, temperature sensors, and overcurrent protection devices [7][8][9]. BTO may be used as an EM wave absorber due to its relatively high dielectric constant [10,11].…”

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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Enhancing dielectric properties and thermal stability in microwave-synthesized Nd-modified barium titanate nanoceramics for possible MLCC applications

Alkathy,

Milton,

Gatasheh

et al. 2024

Appl. Phys. A

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Synthesis and characterization of high performance CaZrO3-doped X8R BaTiO3-based dielectric ceramics

Cited by 17 publications

References 22 publications

The Occupation Behavior of Y₂O₃ and Its Effect on the Microstructure and Electric Properties in X7R Dielectrics

The Occupation Behavior of Y₂O₃ and Its Effect on the Microstructure and Electric Properties in X7R Dielectrics

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

Enhancing dielectric properties and thermal stability in microwave-synthesized Nd-modified barium titanate nanoceramics for possible MLCC applications

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Synthesis and characterization of high performance CaZrO3-doped X8R BaTiO3-based dielectric ceramics

Cited by 17 publications

References 22 publications

The Occupation Behavior of Y2O3 and Its Effect on the Microstructure and Electric Properties in X7R Dielectrics

The Occupation Behavior of Y2O3 and Its Effect on the Microstructure and Electric Properties in X7R Dielectrics

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

Enhancing dielectric properties and thermal stability in microwave-synthesized Nd-modified barium titanate nanoceramics for possible MLCC applications

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About

The Occupation Behavior of Y₂O₃ and Its Effect on the Microstructure and Electric Properties in X7R Dielectrics

The Occupation Behavior of Y₂O₃ and Its Effect on the Microstructure and Electric Properties in X7R Dielectrics

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