Growth of La2Mo2O9 films on porous Al2O3 substrates by radio frequency magnetron sputtering

Laffez, P.; Chen, X.Y.; Banerjee, Gaurab; Pézeril, Thomas; Rossell, Marta D.; Tendeloo, G. Van; Lacorre, P.; Liu, J.M.; Liu, Z.G.

doi:10.1016/j.tsf.2005.10.062

Cited by 18 publications

(11 citation statements)

References 8 publications

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“…A similar message to the scientific community is given by Plummer et al 2 An example of the increased complexity is the use of the complex metal oxide thin films. These coatings find application as corrosion and wear resistant coatings, 3,4 high-k dielectrics, 5,6 solid state ionic conductors in solid oxide fuel cells, [7][8][9][10] or thin film batteries. [11][12][13] As one of the future challenges for the thin film deposition, Willmott and others see the control required for the composition of complex metal oxides.…”

Section: Introductionmentioning

confidence: 99%

Compositional effects on the growth of Mg(M)O films

Saraiva

Georgieva

Mahieu

et al. 2010

Journal of Applied Physics

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The influence of the composition on the crystallographic properties of deposited Mg(M)O (with M=Al, Cr, Ti, Y, and Zr) films is studied. For a flexible control of the composition, dual reactive magnetron sputtering was used as deposition technique. Two different approaches to predict the composition are discussed. The first is an experimental way based on the simple relationship between the deposition rate and the target-substrate distance. The second is a route using a Monte Carlo based particle trajectory code. Both methods require a minimal experimental input and enable the user to quickly predict the composition of complex thin films. Good control and flexibility allow us to study the compositional effects on the growth of Mg(M)O films. Pure MgO thin films were grown with a (111) preferential out-of-plane orientation. When adding M to MgO, two trends were noticed. The first trend is a change in the MgO lattice parameters compared to pure MgO. The second tendency is a decrease in the crystallinity of the MgO phase. The experimentally determined crystallographic properties are shown to be in correspondence with the predicted properties from molecular dynamics simulations

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Section: Introductionmentioning

confidence: 99%

Compositional effects on the growth of Mg(M)O films

Saraiva

Georgieva

Mahieu

et al. 2010

Journal of Applied Physics

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“…The impedance spectra of samples S2 and S3 are similar and not shown. The high‐frequency arc can be ascribed to the superposition of grain and grain‐boundary resistance effects, while the low‐frequency tail is connected with the diffusion process of the Warburg impedance, of the interface between the electrode and electrolyte 3,10,32 . The superposition often appears when grain size is reduced to the nanometer regime, where grain‐boundary resistance is dominant.…”

Section: Resultsmentioning

confidence: 99%

“…Up to now, however, most studies were focused on the bulk La 2 Mo 2 O 9 materials. In fact, there is only one reference in the literature that reported the fabrication of La 2 Mo 2 O 9 films, 32 in which the films were prepared on a porous Al 2 O 3 substrate by the radio frequency (RF) sputtering method.…”

Section: Introductionmentioning

confidence: 99%

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Ionic Conductivity Enhancement of La₂Mo_2−xW_xO₉ Nanocrystalline Films Deposited on Alumina Substrates by the Sol–Gel Method

Zhuang¹,

Wang²,

Li³

et al. 2009

Journal of the American Ceramic Society

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Dense, crack-free, and uniform La 2 Mo 2Àx W x O 9 (x 5 0, 0.1, and 0.2) nanocrystalline films were successfully synthesized on poly-alumina substrates via a modified sol-gel method, with inorganic salt of La(NO 3 ) 3 . 6H 2 O, (NH 4 ) 6 Mo 7 O 24 . 4H 2 O, and (NH 4 ) 6 H 2 W 12 O 24 as precursors. Pure La 2 Mo 2 O 9 phase was confirmed by X-ray diffractometer when the annealing temperature was 45001C. The average grain size of the La 2 Mo 2Àx W x O 9 films is in the range of 90-400 nm, depending upon the conditions of thermal treatment, and the thickness of films can reach 1 lm by repetitive spin-coating. The electrical conductivity increases with decreasing grain size and reaches 0.074 S/cm at 6001C in the film with a grain size of 90 nm, which is one order of magnitude higher than that in the corresponding bulk materials. W-doping can suppress the phase transition that occurs at 5801C in pure La 2 Mo 2 O 9 and enhance the low-temperature ionic conductivity. Furthermore, the activation energy of conductivity in the nanocrystalline La 2 Mo 2 O 9 films decreases to about 0.6 eV in comparison with 1.0 eV in the bulk ones, which implies that the grain resistance prevails in the total resistance, when grain size reduces to nanometer domain. J. Stevenson-contributing editorThis work has been subsidized by the

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“…In fact, LMO has been studied as an ionconductive material. Thin films of LMO have been prepared using solgel method, 12) sputtering, 13) and pulsed laser deposition. 14),15) Nevertheless, no report to date has described transparent film processing or antibacterial or antiviral activities of prepared LMO films.…”

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confidence: 99%

Transparent porous La2Mo2O9 thin film preparation and antibacterial and antiviral activities

Saruwatari

Sunada²,

Isobe

et al. 2021

J. Ceram. Soc. Japan

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Thin La 2 Mo 2 O 9 (LMO) films were prepared using wet processing with acetylacetonates as starting materials. After acetylacetonates of La and Mo were dissolved into a mixture of 2-methoxyethanol and acetylacetone, the obtained precursor solution was coated onto Pyrex glass plates by spin coating. Transparent porous LMO thin film was obtained after vacuum ultraviolet light illumination and firing at 500°C for 1 h in ambient air. The film exhibited antibacterial and antiviral activities that were almost equivalent to those of LMO powder against Escherichia coli, Staphylococcus aureus, bacteriophage Q¢, and bacteriophage¯6.

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Growth of La2Mo2O9 films on porous Al2O3 substrates by radio frequency magnetron sputtering

Cited by 18 publications

References 8 publications

Compositional effects on the growth of Mg(M)O films

Compositional effects on the growth of Mg(M)O films

Ionic Conductivity Enhancement of La₂Mo_2−xW_xO₉ Nanocrystalline Films Deposited on Alumina Substrates by the Sol–Gel Method

Transparent porous La<sub>2</sub>Mo<sub>2</sub>O<sub>9</sub> thin film preparation and antibacterial and antiviral activities

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Growth of La2Mo2O9 films on porous Al2O3 substrates by radio frequency magnetron sputtering

Cited by 18 publications

References 8 publications

Compositional effects on the growth of Mg(M)O films

Compositional effects on the growth of Mg(M)O films

Ionic Conductivity Enhancement of La2Mo2−xWxO9 Nanocrystalline Films Deposited on Alumina Substrates by the Sol–Gel Method

Transparent porous La<sub>2</sub>Mo<sub>2</sub>O<sub>9</sub> thin film preparation and antibacterial and antiviral activities

Contact Info

Product

Resources

About

Ionic Conductivity Enhancement of La₂Mo_2−xW_xO₉ Nanocrystalline Films Deposited on Alumina Substrates by the Sol–Gel Method