scholarly journals Tailoring Growth Kinetics toward a Size-Dependent Work Function of Ge Nanocrystals Synthesized by Inert Gas Condensation

2021 ◽  
Author(s):  
Xiaotian Zhu ◽  
Lijuan Xing ◽  
Gert H. ten Brink ◽  
Bart J. Kooi ◽  
George Palasantzas
Keyword(s):  
Work Function ◽  
Growth Kinetics ◽  
Inert Gas ◽  
Gas Condensation ◽  
Size Dependent ◽  
Inert Gas Condensation ◽  
Ge Nanocrystals

Effect of Particle Size on the Oxidation Behavior of Nanophase Tin Synthesized by Inert Gas Condensation

2007 ◽  
Vol 119 ◽  
pp. 9-12
Author(s):  
J.S. Kim ◽  
Moo Young Huh ◽  
Jae Pyong Ahn
Keyword(s):  
Particle Size ◽  
Tin Oxide ◽  
Inert Gas ◽  
Oxide Shell ◽  
Gas Condensation ◽  
Size Dependent ◽  
The Core ◽  
Inert Gas Condensation ◽  
Effect Of Particle Size ◽  
Higher Temperature

Nanophase tin powder having sizes ranging from 6 to 40 nm was synthesized by the inert gas condensation method using helium as the convection gas. As-synthesized particles smaller than 8 nm were the amorphous tin oxide. As-synthesized particles larger than 10 nm can be characterized by the core-shell structure comprising inner crystalline tin core and outer amorphous tin oxide shell having a thickness of about 4 nm. Upon annealing in air, the oxidation of nanophase tin particles strongly depended on particle size. With increasing particle size, the transformation into the crystalline phases took places at a higher temperature. Calculation of the size dependent melting temperature of tin particles indicates that melting of the tin encapsulated with the amorphous tin oxide took place prior to the oxidation.

Highly Size-Controlled Synthesis of Metal Nanoclusters by Inert-Gas Condensation for Nano-Devices

2010 ◽  
Vol 10 (5) ◽  
pp. 3667-3670 ◽  
Author(s):  
Il-Suk Kang ◽  
Hyun-Sang Seo ◽  
Deuk-Han Kim ◽  
Taek-Yeong Lee ◽  
Jun-Mo Yang ◽  
...  
Keyword(s):  
Inert Gas ◽  
Controlled Synthesis ◽  
Metal Nanoclusters ◽  
Gas Condensation ◽  
Inert Gas Condensation ◽  
Size Controlled

Inert gas condensation of Sb, Bi and Pb clusters

1981 ◽  
Vol 106 (1-3) ◽  
pp. A170
Author(s):  
J. Mühlbach ◽  
E. Recknagel ◽  
K. Sattler
Keyword(s):  
Inert Gas ◽  
Gas Condensation ◽  
Inert Gas Condensation

Formation Mechanism of Fe Nanocubes by Magnetron Sputtering Inert Gas Condensation

ACS Nano ◽  
2016 ◽  
Vol 10 (4) ◽  
pp. 4684-4694 ◽  
Author(s):  
Junlei Zhao ◽  
Ekaterina Baibuz ◽  
Jerome Vernieres ◽  
Panagiotis Grammatikopoulos ◽  
Ville Jansson ◽  
...  
Keyword(s):  
Magnetron Sputtering ◽  
Formation Mechanism ◽  
Inert Gas ◽  
Gas Condensation ◽  
Inert Gas Condensation

EFFECTIVE MAGNETIC ANISOTROPY AND COERCIVITY IN Fe NANOPARTICLES PREPARED BY INERT GAS CONDENSATION

2006 ◽  
Vol 20 (01) ◽  
pp. 37-47
Author(s):  
LUBNA RAFIQ SHAH ◽  
BAKHTYAR ALI ◽  
S. K. HASANAIN ◽  
A. MUMTAZ ◽  
C. BAKER ◽  
...  
Keyword(s):  
Room Temperature ◽  
Size Range ◽  
Magnetic Measurements ◽  
Uniaxial Anisotropy ◽  
Inert Gas ◽  
Condensation Process ◽  
Gas Condensation ◽  
Inert Gas Condensation ◽  
Fe Nanoparticles ◽  
Characterization Studies

We present magnetic measurements on iron ( Fe ) nanoparticles in the size range 10–30 nm produced by the Inert Gas Condensation process (IGC). Structural characterization studies show the presence of a core/shell structure, where the core is bcc Fe while the surface layer is Fe -oxide. Analysis of the magnetic measurements shows that the nanoparticles display very large uniaxial anisotropy, K eff ≈3 - 4 × 106 erg/cc. The observed room temperature coercivities lie in the range ≈600 – 973 Oe , much larger than those expected from the Stoner–Wohlfarth model using the bulk iron anisotropy. It can be inferred from the coercivity variation with the particle size that there is a general trend of the coercivity increasing with size, culminating finally in a decrease for high sizes (30 nm) possibly due to the onset of non-coherent magnetization reversal processes.

scholarly journals Forming pressure effect on microstructure and mechanical properties of nanocrystalline aluminum synthesized by inert gas condensation

2019 ◽  
Vol 79 ◽  
pp. 02002
Author(s):  
Shangshu Wu ◽  
Zhou Yu ◽  
Junjie Wang ◽  
Hanxin Zhang ◽  
Chaoqun Pei ◽  
...  
Keyword(s):  
Room Temperature ◽  
High Vacuum ◽  
Inert Gas ◽  
Helium Atmosphere ◽  
Gas Condensation ◽  
Inert Gas Condensation ◽  
In Situ Forming ◽  
Nanocrystalline Aluminum ◽  
Al Powder

The preparation of nanocrystalline aluminum (NC Al) was conducted in two steps. After the NC Al powder was synthesized by an Inert gas condensation (IGC) method in a helium atmosphere of 500 Pa, the NC Al powder was in-situ compacted into a pellet with a 10 mm diameter and 250 μm-300 μm thickness in a high vacuum (10-6 Pa-10-7 Pa) at room temperature. The NC Al samples were not exposed to air during the entire process. After the pressure reached 6 GPa, the relative density could reach 99.83%. The results showed that the grain size decreased with the increased of in-situ forming pressure. The NC Al samples present obvious ductile fracture, and the tensile properties were greatly changed with the increase of forming pressure.

On the formation of ternary metallic-dielectric multicore-shell nanoparticles by inert-gas condensation method

2015 ◽  
Vol 151 ◽  
pp. 275-281 ◽  
Author(s):  
Maria Benelmekki ◽  
Jerome Vernieres ◽  
Jeong-Hwan Kim ◽  
Rosa-E. Diaz ◽  
Panagiotis Grammatikopoulos ◽  
...  
Keyword(s):  
Inert Gas ◽  
Shell Nanoparticles ◽  
Gas Condensation ◽  
Inert Gas Condensation ◽  
Condensation Method
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