Helium swelling in WO3 microcomposites

Здоровец, М. В.; Kenzhina, I.; Kudryashov, V. V.; Kozlovskiy, Artem L.

doi:10.1016/j.ceramint.2020.01.053

Cited by 65 publications

(6 citation statements)

References 35 publications

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“…XRD pattern show that the average particle size of the samples is different for different sintering temperatures and peak intensity also changes with change in temperature as reported in Table 1 . The particle size is increasing with rising the sintering temperature which is responsible for high conductivity or low resistivity 22 – 24 . For the sample sintered at 1200 °C, single phase manganese ferrite is obtained having more prominent phase compared to other samples.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of manganese ferrite from low grade manganese ore through solid state reaction route

Ahmad

Ali

Ullah

et al. 2021

Sci Rep

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Manganese ferrite spinel has been synthesized by using low grade manganese ore and ferric oxide as sources of manganese oxide and iron oxide through solid state reaction route by taking manganese and iron mole ratio of 1:2 respectively. The impact of sintering temperature on phase composition and particle size is investigated. Similarly, the impact of frequency on dielectric constant, dielectric loss, AC (alternating current) conductivity and tangent losses is also investigated. The results shows the presence of spinel structure manganese ferrite (MnFe2O4) as the major phase for the sample sintered at 1200 °C. It has been established that the crystallite size increase with rise in sintering temperature. The surface morphology of the sample sintered at 1200 °C show pyramidal and triangular shape grains. The dielectric constant (εʹ) and dielectric losses (εʹʹ) were observed to decrease with increasing the sintering temperature and frequency. Furthermore, the AC (alternating current) conductivity was found to rise with rise in applied frequency. On the other hand, the tangent losses falls considerably with rise in applied frequency.

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Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of manganese ferrite from low grade manganese ore through solid state reaction route

Ahmad

Ali

Ullah

et al. 2021

Sci Rep

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show abstract

“…A lot of research is being done to get the materials with the desired functional properties 15 – 17 . In most cases, the microstructure determines the properties 18 , 19 , especially in the case of nanostructured materials, thin films, multilayer structures, etc. For this reason, a simple way to create materials with the necessary properties is to control the microstructure at the synthesis stage.…”

Section: Introductionmentioning

confidence: 99%

Method of surface energy investigation by lateral AFM: application to control growth mechanism of nanostructured NiFe films

Zubar

Fedosyuk²,

Trukhanov

et al. 2020

Sci Rep

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A new method for the specific surface energy investigation based on a combination of the force spectroscopy and the method of nanofriction study using atomic force microscopy was proposed. It was shown that air humidity does not affect the results of investigation by the proposed method as opposed to the previously used methods. Therefore, the method has high accuracy and repeatability in air without use of climate chambers and liquid cells. The proposed method has a high local resolution and is suitable for investigation of the specific surface energy of individual nanograins or fixed nanoparticles. The achievements described in the paper demonstrate one of the method capabilities, which is to control the growth mechanism of thin magnetic films. The conditions for the transition of the growth mechanism of thin Ni 80 Fe 20 films from island to layer-by-layer obtained via electrolyte deposition have been determined using the proposed method and the purpose made probes with Ni coating.

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“…The fluorite-structured nuclear oxides (YSZ, UO 2 , CeO 2 , etc.) have been known to show a remarkable resistance to irradiation-induced amorphization. − Several studies have reported the ion irradiation behavior of these fluorite oxides (and also others , ) and their characterization using various techniques such as diffraction, electron microscopy, vibrational techniques, etc. The nature of the defects and their agglomeration could be investigated using these studies, which have yielded vital information on the behavior of fuel materials in reactors and/or waste matrices under constant irradiation.…”

Section: Introductionmentioning

confidence: 99%

Insights into the Effect of Particle Size on the Low Energy Radiation Response of Ceria

et al. 2020

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Understanding the radiation tolerance of ceramics against low energy heavy ions is important for evaluating their stability against alpha recoils, which are a significant source of damage for their application as nuclear fuels and/or waste immobilization matrices. Radiation response of ceramics is significantly affected by the particle size and microstructure in addition to their crystalline structure. With this motivation, three different particle-sized CeO 2 samples were subjected to irradiation by 400 keV Kr ion at various fluences. The smaller particle-sized samples are found to be more radiation tolerant, which is attributed to the higher prevalence of grain boundaries that act as sinks for the (irradiation-induced) defects. The predominant defects generated in these systems are observed to be Ce 3+ and vacancy-related isolated clusters as investigated by Raman spectroscopy and corroborated by X-ray photoelectron spectroscopy and photoluminescence studies. However, in the micron-sized sample, a secondary fluorite-type defective phase appears upon irradiation, as seen from X-ray diffraction, which continually expands with an increase in fluence, unlike the smaller-sized samples. Interestingly, the relative content of reduced Ce (Ce 3+ /Ce 4+ ratio) is observed to be much higher in the smaller-sized samples post-irradiation, making it an important manifestation of irradiation effects in nanoceria. More importantly, the radiation tolerance as a function of particle size in the low energy regime is observed to have an opposite trend to that under high energy heavy ion irradiation, and this comparison has been discussed. CeO 2 is also widely employed as the surrogate for PuO 2 , and the present study thus has significance to self-irradiation of PuO 2 as well.

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Helium swelling in WO3 microcomposites

Cited by 65 publications

References 35 publications

Synthesis and characterization of manganese ferrite from low grade manganese ore through solid state reaction route

Synthesis and characterization of manganese ferrite from low grade manganese ore through solid state reaction route

Method of surface energy investigation by lateral AFM: application to control growth mechanism of nanostructured NiFe films

Insights into the Effect of Particle Size on the Low Energy Radiation Response of Ceria

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