Zobrazeno 1 - 10
of 120
pro vyhledávání: '"T. Kerdja"'
Publikováno v:
Journal of Fundamental and Applied Sciences, Vol 4, Iss 1, Pp 53-58 (2015)
In this contribution we study the effect of the oxygen pressure on the plasma dynamics during the ablation of oxides materials into an oxygen gas. The study was done using fast imaging and ion probe techniques. Both techniques revealed that a thresho
Externí odkaz:
https://doaj.org/article/71703388ad0c4454b200dbe76989c7d7
Autor:
T. Kerdja, Jyrki Lappalainen, S. Abdelli-Messaci, B. Guedouar, S. Malek, O. Nemraoui, S. Lafane, Mohamed Kechouane
Publikováno v:
Thin Solid Films. 632:119-127
In this contribution, we explore the influence of substrate temperature on the phase evolution, morphology and transition properties of vanadium dioxide nanostructured thin films grown by pulsed laser deposition technique on glass and silicon substra
Publikováno v:
Arabian Journal for Science and Engineering. 40:2873-2879
The main purpose of the present work is the preparation of green dielectrics by solid-state reaction between two perovskites: CaTiO3 (CTO) and KMgF3 (KMF). Calcium titanate and potassium magnesium fluoride powders were previously synthesized, respect
Autor:
M. A. Harith, S. Messaoud Aberkane, Sif Eddine Amara, K. Yahiaoui, T. Kerdja, A. Bendib, S. Abdelli-Messaci, S. Boudjemai
Publikováno v:
Applied Surface Science. 301:225-229
Surface hardness is a very important characteristic of metals. Its monitoring plays a key role in industry. In the present paper, using laser induced breakdown spectroscopy (LIBS), Fe–V 18% –C 1% alloys with different heat treatments have been us
Publikováno v:
Applied Surface Science. 269:120-124
Plume dynamics was studied by ion probe diagnostics for Sm 1− x Nd x NiO 3 thin film deposition. The fluence was set at 2 J cm −2 and the oxygen pressure was varied from vacuum to 1 mbar. At vacuum and low oxygen pressure the ion expansion is fre
Autor:
A. Cheriet, T. Kerdja, Y. Belkacem, Aissa Keffous, N. Gabouze, L. Talbi, T. Hadjersi, A. Boukezzata, Malika Berouaken, Y. Boukennous, Mohamed Kechouane, Y. Ouadah, Hamid Menari
Publikováno v:
Physica B: Condensed Matter. 408:193-197
The present paper reports on a new structure for H2 gas sensing based on thin porous silicon carbide (PSiC) films. The PSiC layer has been formed by electrochemical etching of SiC films previously deposited onto p-type silicon substrate by pulsed las
Publikováno v:
Applied Physics A. 112:159-164
Vanadium dioxide thin films have been deposited on Corning glass substrates by a KrF laser ablation of V2O5 target at the laser fluence of 2 J cm−2. The substrate temperature and the target-substrate distance were set to 500 ∘C and 4 cm, respecti
Publikováno v:
Applied Physics A. 110:241-248
The plume expansion dynamics for the Sm1−x Nd x NiO3 thin films deposition by a KrF excimer laser into oxygen atmosphere has been investigated using fast imaging. The study was carried out at 0.2 and 0.3 mbar of oxygen pressure and for different la
Publikováno v:
Optics Communications. 285:3272-3275
Laser beam deflectometry was used to follow the growth dynamic of C 60 nanorods via an interfacial diffusion and self-assembly phenomenon. The deduced average value of the interfacial diffusion coefficient D int from the refractive index gradient was
Publikováno v:
Optics Communications. 285:1190-1193
Being a Mott type oxide, at a temperature of ~ 68 °C and ambient pressure, stoichiometric VO 2 undergoes a first order metal-insulator transition, which is accompanied by a reversible abrupt change in the band gap opening. From an optical point of v