Microstructure and thermoelectric properties of Al-doped ZnO ceramic prepared by spark plasma sintering

Radingoana, Precious Manti; Guillemet‐Fritsch, Sophie; Noudem, Jacques; Olubambi, Peter Apata; Chevallier, Geoffroy; Estournès, Claude

doi:10.1016/j.jeurceramsoc.2022.10.034

Cited by 16 publications

(3 citation statements)

References 57 publications

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“…To address this challenge, our research focuses on the synthesis and characterization of copper-doped ZnO nanoparticles and ceramics using controlled sol–gel methods and Spark Plasma Sintering (SPS) at a consistent temperature of 1000 °C. This investigation aims to unravel the intricate interplay between synthesis parameters and resulting electronic performance, contributing valuable insights to the ongoing advancements in the design and application of ZnO-based electronic materials [ 11 , 12 ]. Despite various studies exploring SPS sintering of ZnO, the need for innovative approaches that achieve both high relative densities and controlled grain sizes remains [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Study of Electrical and Dielectric Behaviors of Copper-Doped Zinc Oxide Ceramic Prepared by Spark Plasma Sintering for Electronic Device Applications

Benamara,

Iben Nassar,

Rivero-Antúnez

et al. 2024

Nanomaterials

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In this study, Cu-doped ZnO aerogel nanoparticles with a 4% copper concentration (Cu4ZO) were synthesized using a sol–gel method, followed by supercritical drying and heat treatment. The subsequent fabrication of Cu4ZO ceramics through Spark Plasma Sintering (SPS) was characterized by X-ray diffraction (XRD), field-emission gun scanning electron microscopy (FE-SEM) equipped with EDS, and impedance spectroscopy (IS) across a frequency range of 100 Hz to 1 MHz and temperatures from 270 K to 370 K. The SPS–Cu4ZO sample exhibited a hexagonal wurtzite structure with an average crystallite size of approximately 229 ± 10 nm, showcasing a compact structure with discernible pores. The EDS spectrum indicates the presence of the base elements zinc and oxygen with copper like the dopant element. Remarkably, the material displayed distinct electrical properties, featuring high activation energy values of about 0.269 ± 0.021 eV. Complex impedance spectroscopy revealed the impact of temperature on electrical relaxation phenomena, with the Nyquist plot indicating semicircular arc patterns associated with grain boundaries. As temperature increased, a noticeable reduction in the radius of these arcs occurred, coupled with a shift in their center points toward the axis center, suggesting a non-Debye-type relaxation mechanism. Dielectric analyses revealed a temperature-driven evolution of losses, emphasizing the material’s conductivity impact. Non-Debye-type behavior, linked to ion diffusion, sheds light on charge storage dynamics. These insights advance potential applications in electronic devices and energy storage.

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Section: Introductionmentioning

confidence: 99%

Study of Electrical and Dielectric Behaviors of Copper-Doped Zinc Oxide Ceramic Prepared by Spark Plasma Sintering for Electronic Device Applications

Benamara,

Iben Nassar,

Rivero-Antúnez

et al. 2024

Nanomaterials

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“…In the spark plasma sintering (SPS) method, which has been recently developed, powder particles would be sintered under high pressure, high heating rates, and low sintering temperatures, which lead to higher densities in consolidated samples vis-a-vis other methods. 23,24 According to the researches, the effect of SiC and FMG micron-sized metallic glass reinforcements on the dynamic mechanical thermal properties, wear, and hardness of metalbased composites has not been studied. Accordingly, in this research work, for the first time, the microstructure, dynamic mechanical thermal properties, hardness, and wear properties of aluminum hybrid composite with SiC and FMG reinforcements which are produced using the SPS method, will be evaluated.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dry sliding wear and viscoelastic performance of aluminum-based hybrid composites reinforced with SiC and metallic glass particles

Albooyeh

Rezaei

Kafshgari

et al. 2022

Journal of Composite Materials

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In this research, a new type of bulk hybrid composites containing different amounts of Fe-based metallic glass (FMG) and SiC particles were successfully produced. FMG and SiC particles with varying percentages of volume were mixed with pure Al matrix and integrated by spark plasma sintering (SPS) method. The dynamic mechanical thermal properties, coefficient of friction and wear rates, hardness, and density of the composite were investigated. The results showed that the addition of FMG and SiC particles improved the wear resistance, hardness value, and storage modulus and slightly decreased the [Formula: see text] and relative density of pure Al. Also, replacing some SiC particles with FMG particles in the hybrid samples, in addition to the change of the dominant wear mechanism, led to the higher storage modulus and hardness values. It was found that the formation of a mechanically mixed layer during the wear test resulted in a reduction in the coefficient of friction. Compared to pure Al, the amounts of the increase in storage modulus and hardness of samples reinforced with 3 vol. % of SiC and 7 vol. % of FMG particles were 24.70% and 68.40%, respectively. The morphological analysis of the hybrid composites demonstrated that the amorphous structure of the FMG particles was preserved.

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The influence mechanism of donor doping from alkaline earth element on the thermoelectric properties of ZnO semiconductor materials for electricity meter

Zheng,

Gan,

Liu

et al. 2024

J Mater Sci: Mater Electron

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Microstructure and thermoelectric properties of Al-doped ZnO ceramic prepared by spark plasma sintering

Cited by 16 publications

References 57 publications

Study of Electrical and Dielectric Behaviors of Copper-Doped Zinc Oxide Ceramic Prepared by Spark Plasma Sintering for Electronic Device Applications

Study of Electrical and Dielectric Behaviors of Copper-Doped Zinc Oxide Ceramic Prepared by Spark Plasma Sintering for Electronic Device Applications

Dry sliding wear and viscoelastic performance of aluminum-based hybrid composites reinforced with SiC and metallic glass particles

The influence mechanism of donor doping from alkaline earth element on the thermoelectric properties of ZnO semiconductor materials for electricity meter

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