Twin-step-related growth phenomena of thick diamond film
نویسنده
چکیده
A thick diamond film prepared by glow discharge plasma assisted chemical vapor deposition (CVD) was investigated by scanning electron microscopy, X-ray diffraction and Raman spectroscopy. The degeneration of the {111} faces into three {110} faces was found to be widespread. Both the {110} and {100} faces grow via a step mechanism, with the steps generally originating from the re-entrant corner formed by twinning. The {100}(111) penetration twin on {100} surfaces is discussed in detail. A twinstep growth mechanism of thick diamond film, which explains the formation of cleavage steps on fracture surface, is proposed.
منابع مشابه
Dissociation of {1 1 1} faces into {1 1 0} faces in thick diamond films
Surface morphology of thick diamond films was investigated using scanning electron microscopy (SEM). The dissociation of [1 1 1} faces into {1 1 0} faces is positively confirmed by the geometrical consideration of the crystal shapes, such as the V-shaped penetration twins and some other unusual crystal shapes. Growth mechanisms of the diamond rLl 1 1} and {1 1 O} faces are discussed. PACS: 81.0...
متن کاملAn Investigation on Two Types of Crystalline Micro-diamond Film Coated Tools Lapping with Sapphire Wafer
Two types of micron-diamond films were prepared on YG6 substrate by hot filament chemical vapor deposition(HFCVD) method. Morphology and orientation of crystalline growth were evaluated by SEM and XRD. Diamond film coated tools and sapphire wafer’ surface before and after lapping experiment were contrasted. The results indicated that a significant change in Raman spectrum of two types of micro...
متن کاملرسوب فیلم نازک کربن شبه الماس و کاربین بهروش پلاسمای الکترولیتی کاتدی
By using cathodic plasma electrolysis, a thin film of diamond-like carbon and carbyne was produced on the nickel surface. The ethanolic solution at different concentrations of 15, 30 and 50 vol% was used as the electrolyte; the produced carbon film was studied by using glow discharge optical emission spectroscopy, scanning electron microscopy, optical profilometer, and s...
متن کاملEffect of Catalyst on the Growth of Diamond-like Carbon by HFCVD
Diamond like carbon (DLC) film was grown by hot filament chemical vapor deposition (HFCVD)technique. In the present work, we investigated the quality of the DLC films groew on the substratesthat were coated with various metal nanocatalysts (Au and Ni). A combination of CH4/Ar/H2 rendersthe growth of carbon nanostructures technique (diamond like carbon). The utilized samples werecharacterized by...
متن کاملStep-related growth phenomena on exact and misoriented (OOl> surfaces of CVD-grown single-crystal diamonds
This study gives an overview of growth phenomena observed on {OOl} homoepitaxial diamond films grown by hot-filamentassisted CVD and acetylene-oxygen flame deposition. The main emphasis lies on the nucleation and propagation of steps, which form a key to understanding the growth on the (2 x I) reconstructed (001) faces.
متن کامل