Plume study by ion probe and morphology control during pulsed laser deposition of Sm1−xNdxNiO3

Lafane, S.; Kerdja, T.; Ngom, B.D.; Abdelli‐Messaci, S.; Malek, S.

doi:10.1016/j.apsusc.2012.10.063

Cited by 7 publications

(8 citation statements)

References 40 publications

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“…Lafane et al reported that the microstructure of the deposited films changes with T-S distance. 16 Porous structures develop at larger T-S distance, while dense films are deposited at shorter T-S distance. This is the result of plume splitting: a decrease in the KE of the APs plays significant role in forming nanostructures.…”

Section: Introductionmentioning

confidence: 99%

“…13 Many issues arise during ablation, and their origins can be classified as (i) physical or (ii) technical. Type (i) issues include the plume splitting phenomenon, [14][15][16][17][18] stoichiometric issues, 17 18 retrograde plume motion (backward motion), [19][20][21] and shock wave development in the background gas. 9-23 Type (ii) issues are related to the influence of substrate temperature, pressure, fluence, and distance between the target and substrate (T-S distance), 24 the gas type, 13 25 the focus lens type, 26 the laser spot size, and the absorption depth determined by the properties of the target and/or the laser.…”

Section: Introductionmentioning

confidence: 99%

“…To apply the plume-splitting effect in the fabrication of nanostructures, it is necessary to understand the effect of the individual processing parameters, such as temperature, pressure, distance, and fluence. [14][15][16][17][18] The first parameter to understand is the temperature. Temperature does not directly affect the KE of APs, but the density of gas near the substrate decreases as the substrate temperature increases.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of Temperature, Target/Substrate Distance, and Background Pressure on Growth of ZnO Nanorods by Pulsed Laser Deposition

Kim¹,

Lee²,

Kim³

et al. 2014

j nanosci nanotechnol

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The growth of ZnO nanorods on the c-plane of Al2O3 substrates by PLD was been investigated by controlling processing conditions such as growth temperature, distance between target and substrate, and background oxygen pressure. ZnO nanorods were observed from the growth temperature of 600 degrees C for the oxygen pressure of 30 mTorr and the target/substrate distance of 70 mm. The diameters of the ZnO nanorods at the temperature of 700 degrees C and the oxygen pressure of 30 mTorr were approximately 200, 70, and 40 nm for the distance of 45, 70, and 100 mm, respectively. ZnO films without nanorods were observed at the distance of 70 mm and the temperature of 700 degrees C when the oxygen pressure decreased to 1 mTorr. The kinetic energy of the ablated particles by the laser decreases during collisions with background oxygen molecules, resulting in conditions that favor the growth of ZnO nanorods.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Temperature, Target/Substrate Distance, and Background Pressure on Growth of ZnO Nanorods by Pulsed Laser Deposition

Kim¹,

Lee²,

Kim³

et al. 2014

j nanosci nanotechnol

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“…However, the presence of an ambient gas during the plume expansion makes its evolution very complex by influencing plume deceleration, thermalization of ablated species, diffusion, recombination, and formation of external and internal shock waves. [9][10][11][12] Ambient gases may influence the mass ablation rate, and this affects the LPP emission spectra, electron temperature and electron density, thereby influencing the analytical capabilities of the LPP using LIBS or LA-ICP-MS. 13,14 Until recently, nanosecond laser pulses have been regularly used for LA analytical and other applications. However, with the advent of short and ultrashort laser pulses, there has been a growing interest in the applications of femtosecond LA.…”

Section: Introductionmentioning

confidence: 99%

Expansion dynamics of ultrafast laser produced plasmas in the presence of ambient argon

et al. 2014

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We investigated the expansion dynamics of fs laser ablated brass plasma in Ar at various pressure levels ranging from 10−5 Torr to atmospheric conditions using time-resolved and spectrally resolved two-dimensional imaging. Significant changes in plume morphology were noticed at varying pressure levels which included free expansion, spherical to cylindrical geometry changes, sharpening, and confinement. The temporal evolution of excited Cu and Zn species in the plume were imaged using narrow band-pass interference filters, and their hydrodynamic expansion features were compared. 2D imaging coupled with monochromatic line selection showed velocity differences, uneven distribution, and aspect ratio differences among the plume species. Plume morphological changes were found to be significant at intermediate pressure levels (∼10 Torr) where plasma emissivity was found to be maximum. The expansion features of plume were compared with various models and found to be generally in good agreement.

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“…Three distinct peaks were observed corresponding to three populations of ionic species. Using a LP, a complex three modal distribution of plasma ions was observed in laser induced plasma of different materials [52,53]. Generally, the fast population was considered to be those ions that have suffered almost no collisions with the oxygen particles [43,52,53].…”

Section: Plasma Analysismentioning

confidence: 99%

Room temperature and high-pressure-pulsed laser deposition of nanocrystalline VO2 thin films on glass substrate: plasma and film analyses

et al. 2021

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In this contribution, we demonstrate room temperature growth of highly oriented single phase nanocrystalline films of VO 2 (A) on glass substrates using pulsed laser deposition (PLD) technique under high oxygen pressure and small target-substrate separation. The structural, morphological, optical, electrical and compositional properties of the deposited thin films have been studied by means of X-ray diffraction, atomic force microscopy, spectrophotometry, 04 probe method and X-ray photoelectron spectroscopy, respectively. The plasma under which VO 2 (A) was grown has been analyzed by means of time-and spaceresolved optical emission spectroscopy (OES) and Langmuir probe (LP) techniques. We evidenced a correlation between growth conditions and plasma characteristics. While OES showed that at the deposition distance corresponding to the length of the visible plasma, the plasma species are completely thermalized and characterized by a very low degree of excitation, LP technique indicated a formation of charged clusters within the gas phase. By combining OES and LP data, a quadruple plasma structure has been shown. The growth of under-stoichiometric (comparing to the parent V 2 O 5 target) nanocrystalline VO 2 (A) phase has been attributed to nanoparticles formation in the gas phase under a plasma environment rarefied in oxygen atoms due to the scattering and backscattering effects. This finding opens 2 up the opportunity to grow VO 2 polymorphs at very low temperature by PLD for novel promising new device functionalities.

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Plume study by ion probe and morphology control during pulsed laser deposition of Sm1−xNdxNiO3

Cited by 7 publications

References 40 publications

Effects of Temperature, Target/Substrate Distance, and Background Pressure on Growth of ZnO Nanorods by Pulsed Laser Deposition

Effects of Temperature, Target/Substrate Distance, and Background Pressure on Growth of ZnO Nanorods by Pulsed Laser Deposition

Expansion dynamics of ultrafast laser produced plasmas in the presence of ambient argon

Room temperature and high-pressure-pulsed laser deposition of nanocrystalline VO2 thin films on glass substrate: plasma and film analyses

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