Abstract
Powder particles of tungsten oxide (WO3) were irradiated by an electron beam with an energy of 200 keV in a transmission electron microscope (TEM) at room temperature. A number of nanocrystals were induced inside the single crystal particle as a result of irradiation damage. Electron energy loss spectroscopy (EELS) analysis revealed a decrease in the oxygen content in the particle which suggested decomposition of the tungsten oxide. In the vicinity of the irradiated area, a number of spherical ultrafine particles of 2-6 nm in diameter were observed. It is revealed that these ultrafine particles are oxide free tungsten. These nanoparticles migrated under the subsequent electron beam irradiation. A few nanoparticles which came into contact were observed to coalesce each other to form a single crystal. The mobility of the atoms was enhanced by the electron beam irradiation under ultrahigh vacuum in a TEM.
Original language | English |
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Pages (from-to) | 123-126 |
Number of pages | 4 |
Journal | Nanostructured Materials |
Volume | 12 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1999 |
Externally published | Yes |
Event | Proceedings of the 1998 4th International Conference on Nanostructured Materials (NANO '98) - Stockholm, Swed Duration: 1998 Jun 14 → 1998 Jun 19 |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics