Activation energy and its fluctuations at grain boundaries of Er3+:BaTiO3 perovskite thin films: Effect of doping concentration and annealing temperature

Nazrin, S.N.; Silva, M. Pereira da; Li, M. Siu; Marega, E.

doi:10.1016/j.vacuum.2021.110562

Cited by 24 publications

(6 citation statements)

References 73 publications

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“…Characteristics of metal crystal structures, such as grain boundaries, crystallographic orientation, and defects, directly influence the propagation paths of magnetic flux and eddy currents [23]. These factors rooted in crystallography can result in alterations in eddy current signals, manifesting as specific disturbances caused by irregular grain boundaries or cracks [24]. Furthermore, the crystal structure dictates the electromagnetic properties of metallic materials, including distinct electrical and magnetic conductivities exhibited by different crystal structures, directly affecting the generation and propagation of eddy currents [25,26].…”

Section: Eddy Current Testingmentioning

confidence: 99%

Nondestructive Testing of Metal Cracks: Contemporary Methods and Emerging Challenges

Shen,

Lu,

Guo

et al. 2023

Crystals

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There are high demands for the early and reliable detection of metal components used in safety-critical structures. Nondestructive testing (NDT) is a pivotal technique used across industries to assess a material’s integrity without causing damage and has been used in early crack detection of metals, mainly based on changes in the crystal structure and magnetic properties of metals. This review provides an overview of internal and external detection technology based on nondestructive testing methods such as ultrasonic, electromagnetic, ray, magnetic particle, etc. Especially, the integration of advanced methodologies such as machine learning and artificial intelligence deserves a place in NDT methods. Furthermore, the multifactorial detection method is promoted to enhance the sensitivity and detection range due to advantage integration but still has emerging challenges for safer equipment and applications. The review aims to compare these methods and outline the future challenges of NDT technologies for metal crack detection.

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Section: Eddy Current Testingmentioning

confidence: 99%

Nondestructive Testing of Metal Cracks: Contemporary Methods and Emerging Challenges

Shen,

Lu,

Guo

et al. 2023

Crystals

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“…Nazrin et al. [43] investigated and carried research explaining the presence of activation energy. Huang et al.…”

Section: Introductionmentioning

confidence: 99%

“…Wang et al [42] examined the apparent AE and discuss some physical features of activation energy in modern technology. Nazrin et al [43] investigated and carried research explaining the presence of activation energy. Huang et al [44] studied and carried out research by deriving an activation energy model and highlight some of the applications in thermochemical processes.…”

Section: Introductionmentioning

confidence: 99%

Modified Buongiorno's model for the analysis of chemically reacting jet flow of ternary hybrid nanofluid under the influence of activation energy and bio‐active mixers

et al. 2023

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In the modern era, the heat transfer is the basic need in every field of sciences and engineering. To augment the energy transfer, the ternary hybrid nanofluid (Thnf) has been used. After the successful nanofluid working performance, the researchers used this idea in many physical situations. Later on, the researchers tried to further improve the performance of nanofluid with high stability. Motivated from the unique practical applications of hybrid nanofluid, in the present analysis, we have considered ternary nanoliquid, which is obtained by the suspension of three nano particulates in base fluids. The aim of the present research is to highlight the thermal applications of ternary nanofluid in the vertical stretching wall jet flow. The suspension of three different nano solid particles is considered in a base liquid water a jet flow over a vertical extending sheet is addressed. In addition to this, the presence of chemical reaction in the concentration, thermophoresis effect in the energy equation and heat source is also addressed. To model the present phenomena of flow using the modified Buongiorno's model, that highlights the impact of Brownian motion and thermophoresis effect. The present flow problem is modelled in terms of PDE's.To transform the obtained model, we use appropriate similarity variables. The transform model is then solved numerically, using the fast convergence numerical PCM approach (parametric continuation method). The solution obtained is shown through graphical representation by indicating the impact of pertinent

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“…After this, Arenas et al [29] studied the activation energy models and their daily life applications. Nazrin et al [30] calculated the AE for various applications. Similarly, Huang et al [31] and Satyayani et al [32] inspected the upshot of AE and its useful applications in the solid fuel processes and the coefficient of diffusion.…”

Section: Introductionmentioning

confidence: 99%

Numerical Calculation of Thermal Radiative Boundary Layer Nanofluid Flow across an Extending Inclined Cylinder

et al. 2023

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This research presents the numerical analysis of the fluid flow containing the micro gyrotactic organism with heat and mass transfer. The flow is allowed to pass through an inclined stretching cylinder with the effects of heat generation/a heat source and activation energy subject to the symmetric boundary conditions at the cylinder walls. Similarity transformation is employed in the system of PDEs (partial differential equations) to transform them into non-dimensional ODEs (ordinary differential equations). The solution to the proposed problem is obtained by using the bvp4c (numerical scheme). The graphical results are plotted for various flow parameters in order to show their impact on the flow, mass, energy, and motile microorganism profiles. Moreover, the angle of inclination disturbs the flow within an inclined cylinder and slows down the fluid motion, while it elevates the energy of the fluid inside an inclined cylinder. Similarly, the curvature effect is also highlighted in the dynamics of fluid velocity, temperature, and the motile microorganism profile. From the obtained results, it is elucidated that growing values of the curvature factor accelerate the temperature, velocity, and motile microbes’ profiles. Finally, some engineering quantities are calculated in terms of skin friction, the Nusselt and Sherwood number, and the density of motile microbes. The acquired results are also displayed in tabular form.

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Activation energy and its fluctuations at grain boundaries of Er3+:BaTiO3 perovskite thin films: Effect of doping concentration and annealing temperature

Cited by 24 publications

References 73 publications

Nondestructive Testing of Metal Cracks: Contemporary Methods and Emerging Challenges

Nondestructive Testing of Metal Cracks: Contemporary Methods and Emerging Challenges

Modified Buongiorno's model for the analysis of chemically reacting jet flow of ternary hybrid nanofluid under the influence of activation energy and bio‐active mixers

Numerical Calculation of Thermal Radiative Boundary Layer Nanofluid Flow across an Extending Inclined Cylinder

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