School of Physics - Theses

Permanent URI for this collection

http://hdl.handle.net/11343/310

Filters

1999 1
1
Reset filters

Settings
Statistics
Citations
Subject: diamond × Subject: Carbon Nitride × End date: 2009 × Author: Lai, Pooi-Fun ×

Search Results

Now showing 1 - 1 of 1
  • Item
    Thumbnail Image
    TEM and structural investigations of synthesized and modified carbon materials
    Lai, Pooi-Fun ( 1999-08)
    Due to the extreme properties of diamond, such as extreme hardness, high thermal conductivity, high electrical breakdown strength, high electron and hole mobilities and large band gap, it is of interest to study this material in detail. Before advantage can be taken of diamond’s properties for high-temperature, high-power electronic applications successful doping/ion implantation of diamond must be achieved. This requires an understanding of the types of defects produced during ion irradiation. In the present work, type IIa diamond has been irradiated with various doses of 320keV Xe ions at room temperature. Analytical techniques used are electron spin resonance spectroscopy, Raman spectroscopy, transmission electron microscopy and electron energy loss spectroscopy. Previous models have suggested that upon ion impact, amorphous and/or graphitized clusters are formed in diamond, which will overlap at a critical dose to form a semi-continuous graphitized layer. (For complete abstract open document)