Structural properties of CdS-doped glass nanocrystallites grown by pulsed laser deposition in high vacuum

2001 ◽  
Vol 19 (1) ◽  
pp. 306-310 ◽  
Author(s):  
H. Wang ◽  
Y. Zhu ◽  
P. P. Ong
Keyword(s):  
Pulsed Laser Deposition ◽  
Structural Properties ◽  
High Vacuum ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Doped Glass

scholarly journals Annealing Condition Effects on the Structural Properties of FePt Nanoparticles Embedded in MgO via Pulsed Laser Deposition

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 131
Author(s):  
Tingting Xiao ◽  
Qi Yang ◽  
Jian Yu ◽  
Zhengwei Xiong ◽  
Weidong Wu
Keyword(s):  
Pulsed Laser Deposition ◽  
Room Temperature ◽  
High Vacuum ◽  
Pulsed Laser ◽  
Annealing Process ◽  
Ultra High Vacuum ◽  
Laser Deposition ◽  
Fept Nanoparticles ◽  
Annealing Conditions ◽  
Vacuum Atmosphere

FePt nanoparticles (NPs) were embedded into a single-crystal MgO host by pulsed laser deposition (PLD). It was found that its phase, microstructures and physical properties were strongly dependent on annealing conditions. Annealing induced a remarkable morphology variation in order to decrease its total free energy. H2/Ar (95% Ar + 5% H2) significantly improved the L10 ordering of FePt NPs, making magnetic coercivity reach 37 KOe at room temperature. However, the samples annealing at H2/Ar, O2, and vacuum all showed the presence of iron oxide even with the coverage of MgO. MgO matrix could restrain the particles’ coalescence effectively but can hardly avoid the oxidation of Fe since it is extremely sensitive to oxygen under the high-temperature annealing process. This study demonstrated that it is essential to anneal FePt in a high-purity reducing or ultra-high vacuum atmosphere in order to eliminate the influence of oxygen.

scholarly journals Optically active Er–Yb doped glass films prepared by pulsed laser deposition

1998 ◽  
Vol 84 (4) ◽  
pp. 2352-2354 ◽  
Author(s):  
R. Serna ◽  
J. M. Ballesteros ◽  
M. Jiménez de Castro ◽  
J. Solis ◽  
C. N. Afonso
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Optically Active ◽  
Laser Deposition ◽  
Doped Glass ◽  
Glass Films

Structural properties of the epitaxial CuCr0.95Mg0.05O2 thin films on c-plane sapphire substrates by pulsed laser deposition

2011 ◽  
Vol 326 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Se-Yun Kim ◽  
Sang-Yun Sung ◽  
Kwang-Min Jo ◽  
Joon-Hyung Lee ◽  
Jeong-Joo Kim ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Structural Properties ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Sapphire Substrates

Structural and Electrical Characterization of Highly Tetrahedral-Coordinated Diamond-Like Carbon Films Grown by Pulsed-Laser Deposition

1994 ◽  
Vol 349 ◽  
Author(s):  
M. P. Siegal ◽  
T. A. Friedmann ◽  
S. R. Kurtz ◽  
D. R. Tallant ◽  
R. L. Simpson ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Growth Parameters ◽  
High Vacuum ◽  
Pulsed Laser ◽  
Electrical Characterization ◽  
Carbon Films ◽  
Laser Deposition ◽  
High Resistivity ◽  
Low Frequencies ◽  
Carbon Carbon Bond

ABSTRACTHighly tetrahedral-coordinated-amorphous-carbon (a-tC) films deposited by pulsed-laser deposition (PLD) on silicon substrates are studied. These films are grown at room-temperatures in a high-vacuum ambient. a-tC films grown in this manner have demonstrated stability to temperatures in excess of T = 1000°C, more than sufficient for any post-processing treatment or application. Film surfaces are optically smooth as determined both visually and by atomic-force microscopy. PLD growth parameters can be controlled to produce films with a range of sp2 - sp3 carbon-carbon bond ratios. Films with the highest yield of sp3 C-C bonds have high resistivity, with a dielectric permittivity constant s σ 4, measured capacitively at low frequencies (1 – 100 kHz). These a-tC films are p-type semiconductors as grown. Schottky barrier diode structures have been fabricated.

Fabricating Two-Dimensional Metal Nanocrystal Arrays Using Pulsed-Laser Deposition and Focused Ion-Beam Technologies

2000 ◽  
Vol 636 ◽  
Author(s):  
Richard F. Haglund ◽  
Robert A. Weller ◽  
Cynthia E. Heiner ◽  
Matthew D. McMahon ◽  
Robert H. Magruder ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
High Vacuum ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Silicon Surfaces ◽  
Silver Nanoclusters ◽  
Laser Evaporation ◽  
Si Substrates

AbstractWe describe recent experiments in which we attempted the initial steps for fabricating twodimensional arrays of metal nanocrystals. We use a commercial pulsed-laser deposition system in concert with a focused ion beam to attempt control over both lateral and vertical dimensions at the nanometer length scale. In our experiments, regular arrays of holes typically 80 nm in diameter were drilled in Si substrates using the focused ion beam. Silver atoms were then deposited onto these substrates by pulsed laser evaporation from a metallic target in high vacuum. Under certain conditions of substrate temperature, laser pulse repetition rate, and fluence, small silver nanoclusters form preferentially around the structures previously etched in the silicon surfaces by the focused ion beam.

Sign in / Sign up

Export Citation Format

Share Document