Abstract
The growth of small supported metal crystals under the influence of an electron beam has been studied in real-time using a 400 keV ultra-high-resolution electron microscope. Samples of Pt, Rh, Cd and Zn supported on amorphous C or Si films were prepared ex situ and crystal growth in situ was recorded directly using a TV imaging/video system attached to the microscope. The different types of observed crystal growth are reported: the fcc metals (Pt and Rh) grow by coalescence, or by the addition of atoms along the particle surface followed by structural rearrangements which result in approximately spherical particles. The hcp metals (Cd and Zn) grow in the form of long rafts along the surface of the substrate film.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 218-224 |
| Number of pages | 7 |
| Journal | Journal of Crystal Growth |
| Volume | 80 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 1 1987 |
Funding
This research was supported in part by Arizona State University Faculty Grant-In-Aid and by the Facility for High Resolution Electron Microscopy, in the Center for Solid State Science at Arizona State University, established with support from the National Science Foundation (Grant DMR-8306501). Support was also received from the Swedish Natural Research Council (E-EG 3914-116 and K-KU 3914-120) and from the National Swedish Board for Technical Development (DNR 84-3515). Professor G. Schmid, Essen, Fed. Rep. of Germany, is gratefully acknowledged for providing the cluster samples.
ASJC Scopus subject areas
- Condensed Matter Physics
- Inorganic Chemistry
- Materials Chemistry