Impact of ZnO addition on structural, morphological, optical, dielectric and electrical performances of BaTiO3 ceramics

Slimani, Y.; Selmi, A.; Hannachi, E.; Baykal, A.; Ercan, I.

doi:10.1007/s10854-019-01284-2

Cited by 93 publications

(20 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, the dielectric loss measurements showed a drastic dielectric loss in the CBT and CBT‐GNP samples and the dielectric loss of pure BT and BT‐GNP samples showed more or less constant values, when the applied frequency was increased from lower to higher values as can be seen in Figure 4c. These results further indicated that the Co doping could influence better than the GNP doping in determining the dielectric loss and charge carriers hopping transport in the BT ceramics 21 …”

Section: Resultsmentioning

confidence: 76%

“…However, the addition of Co (3 mol%) and GNP (1 mol%) improved the dielectric constant of a pure BT from 1,106 to a higher value of 2,947 for the CBT‐GNP. The addition of Co dopant in BT induced lattice distortion and improved the grain growth by the formation of perfectly crystallized grains, and the GNP additive parried some charges at the interface between the BT and GNP nanosheets due to the Maxwell−Wagner−Sillars effects contributed to the increase in the dielectric constant of the CBT‐GNP nanocomposite 2,21 . Besides, the dielectric loss measurements showed a drastic dielectric loss in the CBT and CBT‐GNP samples and the dielectric loss of pure BT and BT‐GNP samples showed more or less constant values, when the applied frequency was increased from lower to higher values as can be seen in Figure 4c.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, the addition of effective inorganic oxide additives during the synthesis of BT powder has been considered as a promising route to enhance its dielectric properties. Particularly, the doping of BT with SiO 2 has improved the dielectric properties, 16 addition of NiO has improved the permittivity by reducing the grain size of BT, 17 MgO added BT has reduced dielectric anomalies, 18 CaO doped BT powders have showed a high dielectric constant and stable temperature dependence, 19 addition of Y 2 O 3 has reduced the grain size and enhanced the dielectric constant, 20 and ZnO addition has showed high dielectric constant and low dielectric loss 21 . Besides, in recent years, the preparations of graphene‐based nanomaterials/BT composite ceramics have attracted wide interests due to the attachment of 2dimensional (2D) graphene sheets, which are known to improve the dielectric, piezoelectric, and ferroelectric properties of many functional ceramics 2,22 .…”

Section: Introudctionmentioning

confidence: 99%

See 2 more Smart Citations

Hydrothermal synthesis, dielectric properties of barium titanate, cobalt doped barium titanate, and their graphene nanoplatelet composites

Baiju

Nagarajan

Sadasivam

et al. 2020

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

In this work, pure barium titanate (BT) and cobalt doped barium titanate (CBT) were synthesized by using barium chloride, tetrabutyl titanate, cobalt chloride, and titanium chloride as precursors via a two-step hydrothermal process. These precursor mixtures were further blended with a dispersion of surfactant + graphene nanoplatelets (GNP) judiciously during the second step of hydrothermal process to obtain their respective BT-GNP and CBT-GNP nanocomposites. The morphological and crystal structures of BT, CBT, BT-GNP, and CBT-GNP samples were analyzed by the powder XRD, and FESEM revealed that the formations of 10-to 30-nm-sized cubic phase BT, CBT nanoparticles with least amount of agglomerations, and more spherically shaped particles in the CBT, whereas their nanocomposite morphologies and compositional elemental mapping showed random distributions of BT and CBT particles over the GNP. The FT-IR analysis indicated the presence of strong chemical interactions between the nanoparticles and GNP sheets in both the BT-GNP and CBT-GNP nanocomposites. Furthermore, the dielectric measurements carried out on the BT, CBT, BT-GNP, and CBT-GNP samples showed tremendous influences of metal doping and GNP on the BT which can support to tune its dielectric properties for several storage applications. K E Y W O R D S barium titanate, cobalt doping, nanocomposite, dielectric property, graphene nanoplatelets 1 | INTROUDCTION Barium titanate (BT) is a widely studied electroceramic material for various device applications such as capacitors, memory storage devices, thermistors, piezoelectric transducers, and sensors due to its excellent dielectric, piezoelectric, and ferroelectric properties. 1-6 In recent years, improving the dielectric, ferroelectric, and ferromagnetic properties of BT ceramics by doping with metals and oxide additives has attracted a great deal of research interests for their use in increasing the performance of several electronic devices. 4,5 Usually, the BT powders are synthesized by a number of leading routes, for instance, sol-gel, 7 coprecipitation, 8 hydrothermal, 9,10 Pechini, and electrochemical methods. 11 The metal doping in BT ceramics is achieved via the methods such

show abstract

Section: Resultsmentioning

confidence: 76%

Section: Resultsmentioning

confidence: 99%

Section: Introudctionmentioning

confidence: 99%

See 1 more Smart Citation

Hydrothermal synthesis, dielectric properties of barium titanate, cobalt doped barium titanate, and their graphene nanoplatelet composites

Baiju

Nagarajan

Sadasivam

et al. 2020

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

show abstract

“…Accordingly, composites and polycrystalline materials may present interfacial polarization and the conduction leads to dielectric losses that influence the permittivity. Ceramics of BT and ZnO present different resistivities and permittivities and we expected that ZnO would provide space charges that accumulate at interfaces of BT and ZnO [31]. Besides, the dielectric responses of grains are dominant at high frequencies, while grain boundaries are dominant at low frequencies.…”

Section: Resultsmentioning

confidence: 99%

“…Wang et al [20] have recently reported the synthesis of BaTiO 3 /ZnO composite ceramics obtained by the conventional solidstate method and that the composite induces a temperaturestable dielectric permittivity. Slimani et al [21] studied the impact of ZnO addition on dielectric properties of BaTiO 3 ceramics for radiofrequency and microwave applications. It has been shown that the introduction of BaTiO 3 in the ZnO matrix increases the dielectric constant of the composite and decrease the dielectric loss [22].…”

Section: Introductionmentioning

confidence: 99%

Cold sintering and electric characterization of ZnO-BaTiO3 composites

2021

View full text Add to dashboard Cite

The sintering is an essential step in the processing of ceramics materials. A number of researchers have reported new techniques for sintering. However, in general, the process still demands high temperatures. This paper reports the results of the cold sintering of ZnO-BaTiO 3 composites. The microstructural, structural, and electric properties of the composite were studied. We obtained high densities (>95%) for pure ZnO and for the composition with 10 wt% of BaTiO 3 at a low temperature of sintering (250 °C/1 h). The increase of BaTiO 3 content reduced the grain size and degraded the sinterability of ZnO. The crystalline structure was investigated by X-ray diffraction and confirmed the separation of the phases after the cold sintering. The BaTiO 3 added in the composite reduced the values of conductivity, permittivity, and also the dielectric loss.

show abstract

Phase Evolution, Dielectric, and Electric Behavior of Sm‐Doped BCTO Ceramic Fabricated by Semi‐Wet Method

Prajapati,

Rai,

Kumar

et al. 2024

Cryst. Res. Technol.

View full text Add to dashboard Cite

Bi(2/3)‐xSmxCu3Ti4O12 (BSCTO x = 0.05, 0.10, and 0.20) ceramics are synthesized using semi‐wet technique and an extensive investigation into their structural, morphological, and elemental properties, alongside dielectric and impedance behaviors, is meticulously carried out. X‐ray powder diffraction analysis unequivocally confirmed the formation of a monophasic BCTO cubic phase without any discernible secondary phases. and the crystallite size of the BSCTO ceramic, obtained by X‐ray diffraction using Debye Scherrer formula, range from 62 to 81 nm. Rietveld analysis reveals that ceramics have a body centered cubic structure with space group Im‐3. The Scanning electron microscope image displays the dense microstructure of the ceramics, while EDX analysis unveils the elemental composition of resulting products. Doping with Sm3+ induced a notable reduction in grain size, as observed through Scanning electron microscope and Atomic Force Microscope analyses, indicating Sm3+ hindered grain growth during sintering, potentially resulting in reduced dielectric constant (ε′). Dielectric constant and dielectric loss of the composition (x = 0.2) are found to be ≈152 and 0.04, respectively at room temperature (1 kHz). Impedance characteristics revealed a substantial increase in grain boundary resistance, leading to improved dielectric loss. The AC conductivity of BSCTO ceramics exhibited a frequency‐dependent increase satisfying to Johncher's power law.

show abstract

Impact of ZnO addition on structural, morphological, optical, dielectric and electrical performances of BaTiO3 ceramics

Cited by 93 publications

References 41 publications

Hydrothermal synthesis, dielectric properties of barium titanate, cobalt doped barium titanate, and their graphene nanoplatelet composites

Hydrothermal synthesis, dielectric properties of barium titanate, cobalt doped barium titanate, and their graphene nanoplatelet composites

Cold sintering and electric characterization of ZnO-BaTiO3 composites

Phase Evolution, Dielectric, and Electric Behavior of Sm‐Doped BCTO Ceramic Fabricated by Semi‐Wet Method

Contact Info

Product

Resources

About