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Title:
Structure and pressure inside Xe nanoparticles embedded in Al
Authors:
Iakoubovskii, Konstantin; Mitsuishi, Kazutaka; Furuya, Kazuo
Affiliation:
AA(Quantum Dot Research Center, National Institute for Materials Science, 3-13 Sakura, Tsukuba 305-0005, Japan), AB(Quantum Dot Research Center, National Institute for Materials Science, 3-13 Sakura, Tsukuba 305-0005, Japan), AC(High Voltage Microscopy Station, National Institute for Materials Science, 3-13 Sakura, Tsukuba 305-0005, Japan)
Publication:
Physical Review B, vol. 78, Issue 6, id. 064105 (PhRvB Homepage)
Publication Date:
08/2008
Origin:
APS
PACS Keywords:
Composition segregation, defects and impurities, Nanocrystals, Doping and impurity implantation, Transmission electron microscopy
DOI:
10.1103/PhysRevB.78.064105
Bibliographic Code:
2008PhRvB..78f4105I

Abstract

Crystalline and amorphous xenon nanoparticles were produced in aluminum by Xe+ ion implantation and were characterized with high-resolution electron microscopy combined with electron energy loss (EEL) spectroscopy. Unusual distributions of the aspect ratio and of the diameter of the crystalline particles were observed and explained, respectively, by minimization of the surface energy and of the strain energy due to the specific lattice mismatch between Al and Xe. Matrix oxidation was revealed as an important phenomenon accompanying the amorphization of Xe particles. Significant variation of relative EEL peak intensities with Xe particle size was observed and associated with unequal pressure inside different particles. The thus revealed variation was utilized to map the pressure distribution inside individual particles with a nanometer spatial resolution.
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