Characteristics and processing effects of ZrO2 thin films grown by metal-organic molecular beam epitaxy

Kim, Myoung Seok; Ko, Young-Hwan; Hong, Jang Hyuk; Jeong, Min Chang; Myoung, Jae Min; Yun, Ilgu

doi:10.1016/j.apsusc.2003.12.017

Cited by 55 publications

(19 citation statements)

References 17 publications

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“…The peaks at 183.3 and 185.7 eV correspond to Zr 3d5/2 and Zr 3d3/2, respectively. 20 According to the peak areas of O 1s and Zr 3d and the sensitive factors, a Zr/O ratio of close to 1 to 2 is obtained…”

Section: Resultsmentioning

confidence: 99%

Corrosion resistance of ZrO₂–Zr-coated biodegradable surgical magnesium alloy

et al. 2008

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Magnesium alloys are potential biodegradable biomaterials in hard tissue implants. However, the fast degradation rate in the biological environment has hampered widespread applications. We propose to use a ZrO 2 coating in conjunction with a Zr transition layer to improve the corrosion resistance of AZ91 magnesium alloy. X-ray photoelectron spectroscopy discloses that the coating is composed of ZrO 2 . The Vickers hardness measurement demonstrates that the surface hardness of the alloy is significantly enhanced. The electrochemical behavior of the coated sample is systematically evaluated by means of potentiodynamic polarization, open-circuit potential evolution, and electrochemical impedance spectroscopy. The electrochemical results indicate that the corrosion resistance of the coated alloy is enhanced significantly, and the electrode-controlled processes in a coated alloy-solution system are discussed.

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Section: Resultsmentioning

confidence: 99%

Corrosion resistance of ZrO₂–Zr-coated biodegradable surgical magnesium alloy

et al. 2008

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“…The four ZrO 2 -containing samples (ZrO 2 , Fe@ZrO 2 -A, Fe@ZrO 2 -N, and Fe@ZrO 2 -B NPs) produced core level spectra, all containing two characteristic peaks that indicate the existence of defect structures within the NPs, but with different levels of intensities (Fig. 6); peaks corresponding to Zr 3 d 5/2 at 181.9 eV (Zr x+ ) and O 1 s at 531.8 eV (sub oxide) 54,55 . Interestingly, the spectra from Fe@ZrO 2 -B NPs had the highest intensities of the peaks for the states of Zr x+ and O sub-oxide.…”

Section: Resultsmentioning

confidence: 99%

Comparative study on the catalytic activity of Fe-doped ZrO2 nanoparticles without significant toxicity through chemical treatment under various pH conditions

Song

Hong

Lee

et al. 2019

Sci Rep

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Despite advances in the construction of catalysts based on metal oxide nanoparticles (MO NPs) for various industrial, biomedical, and daily-life applications, the biosafety concerns about these NPs still remain. Recently, the need to analyze and improve the safety of MO NPs along with attempts to enhance their catalytic performance has been strongly perceived. Here, we prepared multiple variants of Fe-doped zirconium oxide (Fe@ZrO 2 ) NPs under different pH conditions; then, we assessed their toxicity and finally screened the variant that exhibited the best catalytic performance. To assess the NP toxicity, the prepared NPs were introduced into three types of human cells originally obtained from different body parts likely to be most affected by NPs (skin, lung, and kidney). Experimental results from conventional cellular toxicity assays including recently available live-cell imaging indicated that none of the variants exerted severe negative effects on the viability of the human cells and most NPs were intracellular localized outside of nucleus, by which severe genotoxicity is unexpected. In contrast, Fe@ZrO 2 NPs synthesized under a basic condition (pH = 13.0), exhibited the highest catalytic activities for three different reactions; each was biochemical ( L -cysteine oxidation) or photochemical one (4-chlorophenol degradation and OH radical formation with benzoic acid). This study demonstrates that catalytic Fe@ZrO 2 NPs with enhanced activities and modest or insignificant toxicity can be effectively developed and further suggests a potential for the use of these particles in conventional chemical reactions as well as in recently emerging biomedical and daily-life nanotechnology applications.

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“…As a result, the oxide thickness is decreased and the accumulation capacitance is increased. It was found that small O 2 /Ar ratio also causes the hydrocarbon-rich plasma and limits crystal size resulting in the increase of the accumulation capacitance (Kim et al, 2004). Based on the results for 2Â XRD scan shown in Fig.…”

Section: Fig 2 -The Main Effect Plots For the Accumulation Capacitanmentioning

confidence: 97%

Statistical modeling of the electrical characteristics for HfO2 thin films grown by MOMBE for high-k dielectric applications

Lee

Kweon

et al. 2008

Journal of Materials Processing Technology

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Characteristics and processing effects of ZrO2 thin films grown by metal-organic molecular beam epitaxy

Cited by 55 publications

References 17 publications

Corrosion resistance of ZrO₂–Zr-coated biodegradable surgical magnesium alloy

Corrosion resistance of ZrO₂–Zr-coated biodegradable surgical magnesium alloy

Comparative study on the catalytic activity of Fe-doped ZrO2 nanoparticles without significant toxicity through chemical treatment under various pH conditions

Statistical modeling of the electrical characteristics for HfO2 thin films grown by MOMBE for high-k dielectric applications

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Characteristics and processing effects of ZrO2 thin films grown by metal-organic molecular beam epitaxy

Cited by 55 publications

References 17 publications

Corrosion resistance of ZrO2–Zr-coated biodegradable surgical magnesium alloy

Corrosion resistance of ZrO2–Zr-coated biodegradable surgical magnesium alloy

Comparative study on the catalytic activity of Fe-doped ZrO2 nanoparticles without significant toxicity through chemical treatment under various pH conditions

Statistical modeling of the electrical characteristics for HfO2 thin films grown by MOMBE for high-k dielectric applications

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Corrosion resistance of ZrO₂–Zr-coated biodegradable surgical magnesium alloy

Corrosion resistance of ZrO₂–Zr-coated biodegradable surgical magnesium alloy