MgO films grown on yttria-stabilized zirconia by molecular beam epitaxy

Maksimov, O.; Fisher, P.; Skowroński, Marek; Salvador, Paul A.; Snyder, Melissa M.; Xu, Jian; Weng, Xiaojun

doi:10.1016/j.jcrysgro.2008.02.013

Cited by 6 publications

(4 citation statements)

References 22 publications

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“…Therefore, the ͑100͒ plane can have two different atomically flat terminations with different structures and stoichiometries, both of which are polar, and therefore have higher surface energies. 23,24 The interface energy between YSZ and LSM is likely to be low due to film-substrate bonding due to some chemical reactivity between the LSM and YSZ and the similarity in ionic bonding within the two materials. Also, LSM may be able to provide a polar surface of opposite charge to the polar YSZ surface, causing further decreases in interface energy.…”

Section: Discussionmentioning

confidence: 99%

Dynamic Changes in LSM Nanoparticles on YSZ: A Model System for Non-Stationary SOFC Cathode Behavior

Woo¹,

Glass²,

Gorte³

et al. 2009

J. Electrochem. Soc.

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The interaction between nanoparticles of strontium-doped lanthanum manganite (LSM) and single-crystal yttria-stabilized zirconia (YSZ) was investigated using atomic force microscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM)/energy-dispersive X-ray spectroscopy (EDX). Nanoparticles of LSM were deposited directly onto single-crystal YSZ (100) substrates using an ultrasonic spray nozzle. As samples were annealed from 850to1250°C , nanoparticles gradually decreased in height and eventually disappeared completely. Subsequent reduction in normalH2∕normalH2O at 700°C resulted in the reappearance of nanoparticles. Studies were carried out on identical regions of the sample, allowing the same nanoparticles to be characterized at different temperatures. Morphological changes indicate the formation of a thin layer of LSM, and XPS results support the observation by indicating an increase in signal from the La and Sr and a decrease in signal from the Y and Zr with increasing temperature. SEM/EDX was used to verify that the nanoparticles in the reduced sample contained La. The changes in the LSM/YSZ morphology may be important in explaining the nonstationary behavior observed in operating solid-oxide fuel cells (SOFCs). The thin layer of LSM initially results in poor cathode performance; reducing conditions then lead to film disruptions, indicating nano/microporosity, that increase oxygen ion diffusion and performance.

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Section: Discussionmentioning

confidence: 99%

Dynamic Changes in LSM Nanoparticles on YSZ: A Model System for Non-Stationary SOFC Cathode Behavior

Woo¹,

Glass²,

Gorte³

et al. 2009

J. Electrochem. Soc.

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“…According to previous reports on the equilibrium formation of rock salt crystals, MgO films could face the lower-energy direction while retaining the preferred growth direction (Chudzik et al, 2001;Maksimov et al, 2008). The pole figures and intensity diagrams for the MgO (100) substrate and for the films deposited onto MgO (100) substrates are shown in Figure 6.…”

Section: Crystal Orientation (In-plane) Analysismentioning

confidence: 60%

Epitaxial Growth of Magnesia Films on Single Crystalline Magnesia Substrates by Atmospheric-Pressure Chemical Vapor Deposition

Komatsu¹,

Alonso²,

Kobayashi³

et al. 2016

JMSR

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MgO films were epitaxially grown on single crystal MgO substrates by atmospheric-pressure chemical vapor deposition (CVD). Reciprocal lattice mappings and X-ray reflection pole figures were used to evaluate the crystal quality of the synthesized films and their epitaxial relation to their respective substrates. The X-ray diffraction profiles indicated that the substrates were oriented out-of-plane during MgO crystal growth. Subsequent pole figure measurements showed how all the MgO films retained the substrate in-plane orientations by expressing the same pole arrangements. The reciprocal lattice mappings indicated that the whisker film showed a relatively strong streak while the continuous film showed a weak one. Hence, highly crystalline epitaxial MgO thin films were synthesized on single crystal MgO substrates by atmospheric-pressure CVD.

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“…E -beam evaporation method utilizes evaporation of material target with e-beam energy. This method is used to grow MgO thin films on air-cleaved (001) surfaces of LiF, NaCI, and KCI using a 6-kW electron gun [ 169 , 170 , 171 ]. It observed that MgO on (001) surfaces of LiF, NaCI, and KCI grows with parallel orientation in the temperature range 25–250 °C [ 172 ].…”

Section: Thin Filmsmentioning

confidence: 99%

Approaches to synthesize MgO nanostructures for diverse applications

Singh

Sharma

et al. 2020

Heliyon

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Magnesium oxide remained interesting from long time for several important phenomena like; defect induced magnetism, spin electron reflectivity, broad laser emission etc. Moreover, nanostructures of this material exhibited suitability for different kinds of applications ranging from wastewater treatment to spintronics depending upon their shape and size. In this way, researchers had grown nanostructures in the form of nanoparticles, thin films, nanotubes, nanowalls, nanobelts. Though nanoparticles and thin films are well known form of nanostructures and wide variety of synthesis approaches are available, however, limited methodology for other nanostructures are available. In order to grow these nanostructures in an optimized way an understanding of these methods is essential. Thus, this review article depicts an overview of various approaches for design of different kinds of nanostructures.

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MgO films grown on yttria-stabilized zirconia by molecular beam epitaxy

Cited by 6 publications

References 22 publications

Dynamic Changes in LSM Nanoparticles on YSZ: A Model System for Non-Stationary SOFC Cathode Behavior

Dynamic Changes in LSM Nanoparticles on YSZ: A Model System for Non-Stationary SOFC Cathode Behavior

Epitaxial Growth of Magnesia Films on Single Crystalline Magnesia Substrates by Atmospheric-Pressure Chemical Vapor Deposition

Approaches to synthesize MgO nanostructures for diverse applications

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