Process analysis of MgO film on NdFeB magnet by sol–gel method

Li, Q.; Zhang, S. Y.; Wang, J. P.; Gao, Hui

doi:10.1179/026708408x334131

Cited by 6 publications

(5 citation statements)

References 27 publications

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“…For their refractory properties, it is a valuable fireproofing ingredient in construction materials. Also in applications where corrosion [7] is not acceptable such as nuclear, chemical or superalloy industries. It has a usage in medical applications [8], where MgO is used for relief of heartburn and sour stomach, as an antacid, magnesium supplement, and as a short-term laxative.…”

Section: Introductionmentioning

confidence: 99%

Magnesium Oxide Nanoparticles: Dielectric Properties, Surface Functionalization and Improvement of Epoxy-Based Composites Insulating Properties

et al. 2018

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Composite insulation materials are an inseparable part of numerous electrical devices because of synergy effect between their individual parts. One of the main aims of the presented study is an introduction of the dielectric properties of nanoscale magnesium oxide powder via Broadband Dielectric Spectroscopy (BDS). These unique results present the behavior of relative permittivity and loss factor in frequency and temperature range. Following the current trends in the application of inorganic nanofillers, this article is complemented by the study of dielectric properties (dielectric strength, volume resistivity, dissipation factor and relative permittivity) of epoxy-based composites depending on the filler amount (0, 0.5, 0.75, 1 and 1.25 weight percent). These parameters are the most important for the design and development of the insulation systems. The X-ray diffraction patterns are presented for pure resin and resin with optimal filler amount (1 wt %), which was estimated according to measurement results. Magnesium oxide nanoparticles were also treated by addition of silane coupling agent (γ-Glycidoxypropyltrimethoxysilane), in the case of optimal filler loading (1 wt %) as well. Besides previously mentioned parameters, the effects of surface functionalization have been observed by two unique measurement and evaluation techniques which have never been used for this evaluation, i.e., reduced resorption curves (RRCs) and voltage response method (VR). These methods (developed in our departments), extend the possibilities of measurement of composite dielectric responses related to DC voltage application, allow the facile comparability of different materials and could be used for dispersion level evaluation. This fact has been confirmed by X-ray diffraction analyses.

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Section: Introductionmentioning

confidence: 99%

Magnesium Oxide Nanoparticles: Dielectric Properties, Surface Functionalization and Improvement of Epoxy-Based Composites Insulating Properties

et al. 2018

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“…Magnesium oxide has many uses; it is used in catalysts and to remediate toxic waste, and is added to refractory products, paint and superconductor materials. Magnesium oxide is an insulator; however, one-dimensional magnesium oxide nanostructures can exhibit violet blue and blue-green phosphorescence [ 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ] and are used in miniaturized optical devices. The effects of dopants on the PL properties of one-dimensional MgO nanostructures have been reported [ 25 , 26 ].…”

Section: Magnesium Oxidementioning

confidence: 99%

“…Magnesium oxide has a variety of uses in many different industries. Fireproofing elements in construction materials are valued for their resistance to heat [ 27 ]. Corrosion is also not an option in sectors like nuclear, chemical and superalloys [ 28 ].…”

Section: Magnesium Oxidementioning

confidence: 99%

MgO Heterostructures: From Synthesis to Applications

et al. 2022

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The energy storage capacity of batteries and supercapacitors has seen rising demand and problems as large-scale energy storage systems and electric gadgets have become more widely adopted. With the development of nano-scale materials, the electrodes of these devices have changed dramatically. Heterostructure materials have gained increased interest as next-generation materials due to their unique interfaces, resilient structures and synergistic effects, providing the capacity to improve energy/power outputs and battery longevity. This review focuses on the role of MgO in heterostructured magnetic and energy storage devices and their applications and synthetic strategies. The role of metal oxides in manufacturing heterostructures has received much attention, especially MgO. Heterostructures have stronger interactions between tightly packed interfaces and perform better than single structures. Due to their typical physical and chemical properties, MgO heterostructures have made a breakthrough in energy storage. In perpendicularly magnetized heterostructures, the MgO’s thickness significantly affects the magnetic properties, which is good news for the next generation of high-speed magnetic storage devices.

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“…The fabricating methods of doped ZnO thin films include: pulsed laser deposition,11 magnetron sputtering,12, 13 sol–gel method,14 magnetic electrodeposition method (reactive evaporation)15 and so on. As a frequently used method of film growth, the DC magnetron sputtering method has the advantages of simple process, low deposition temperature and so on, can fabricate uniform and large area films more easily than pulsed laser deposition method and can fabricate films with higher quality than sol–gel method 12.…”

Section: Introductionmentioning

confidence: 99%

Si doped ZnO thin films for transparent conducting oxides

Qin

Liu

Yuan

2013

Surface Engineering

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Transparent conductive silicon doped zinc oxide (SZO, 3%Si) thin films are grown by direct current magnetron sputtering on glass substrates at room temperature. Experimental results show that the sputtering time has a significance impact on the growth rate, crystal quality and electrical properties of the films, and have little impact on the optical properties of the films. The growth rate decreases with the sputtering time. The resistivity of ZnO/Si films decreases as the sputtering time increases from 8 to 20 min. However, as the sputtering time increases further, the electrical resistivity increases instead. When other sputtering conditions are kept unchanged, it is found that the optimum sputtering time is 20 min and the achieved lowest resistivity is 4?92610 24 V cm (sheet resistance511?5 V/sq for thickness 427?5 nm). The UV-vis transmission spectrum shows that all film samples present a transmission of above 90?0% in the visible range.

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Process analysis of MgO film on NdFeB magnet by sol–gel method

Cited by 6 publications

References 27 publications

Magnesium Oxide Nanoparticles: Dielectric Properties, Surface Functionalization and Improvement of Epoxy-Based Composites Insulating Properties

Magnesium Oxide Nanoparticles: Dielectric Properties, Surface Functionalization and Improvement of Epoxy-Based Composites Insulating Properties

MgO Heterostructures: From Synthesis to Applications

Si doped ZnO thin films for transparent conducting oxides

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