Laser-produced Sm1−x Nd x NiO3 plasma dynamic through Langmuir probe and ICCD imaging combined analysis

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

doi:10.1007/s00339-015-9548-7

Cited by 5 publications

(3 citation statements)

References 33 publications

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“…2a), the arrival time of the fast ions should be 1.2 µs which is lower than that of the present case (2µs). Further, using oxygen gas, the fast ion population has been commonly observed for pressures less than 1 mbar [54][55][56]. For a higher pressure as used in this study, these ion populations are completely transferred to the main delayed plasma component through multiple-scattering process [57].…”

Section: Plasma Analysismentioning

confidence: 73%

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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Section: Plasma Analysismentioning

confidence: 73%

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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“…Some studies report on a specific terminology for these structures, the first one also named the fast one is created by electrostatic mechanism (Cloulomb Explosion), the second one or slower structure is generated by thermal mechanisms (Explosive boiling), while the third consists of mainly clusters or nanoparticles. Their presence has beforehand been reported and extensively discussed in conjecture with the multiple ejection mechanism and their correlation with the fractality of the LPP [7,14,15,17] by our group. However, our focus will not be on this third structure as the main optical signatures, seen through our experimental methods, are given by the dynamics of simpler plasma entities like atoms or ions.…”

Section: Laser Induced Plasmas On Memory Shape Alloysmentioning

confidence: 76%

“…When investigating the ejected cloud of particle, the ideal investigation technique should be non-invasive and offer global and local information about the plasma components. Such a technique can be considered the combination of ICCD fast camera imaging and space and time resolved optical emission spectroscopy, which is used consistently by our group [7,13,14] and it was also validated by a significant number of papers [15,16]. Our approach was a global -local one, meaning that the initial step was to collect the global emission (in the 300-700 nm regime) of the LPP at consecutive time-delays with respect to the laser beam.…”

Section: Laser Induced Plasmas On Memory Shape Alloysmentioning

confidence: 99%

Dynamics of Transient Plasmas Generated by ns Laser Ablation of Memory Shape Alloys

Irimiciuc¹,

Forna²,

Agop³

et al. 2021

Practical Applications of Laser Ablation

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Understanding the underline fundamental mechanism behind experimental and industrial technologies embodies one of the foundations of the advances and tailoring new materials. With the pulsed laser deposition being one of the key techniques for obtaining complex biocompatible materials with controllable stoichiometry, there is need for experimental and theoretical advancements towards understanding the dynamics of multi component plasmas. Here we investigate the laser ablation process on Cu-Mn-Al and Fe-Mn-Si by means of space-and time-resolved optical emission spectroscopy and fast camera imaging. In a fractal paradigm the space–time homographic transformations were correlated with the global dynamics of the ablation plasmas.

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Particle distribution in transient plasmas generated by ns-laser ablation on ternary metallic alloys

2019

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Laser-produced Sm1−x Nd x NiO3 plasma dynamic through Langmuir probe and ICCD imaging combined analysis

Cited by 5 publications

References 33 publications

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

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

Dynamics of Transient Plasmas Generated by ns Laser Ablation of Memory Shape Alloys

Particle distribution in transient plasmas generated by ns-laser ablation on ternary metallic alloys

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