MICROCRYSTALLINE DIAMOND PHASE BY LASER-ABLATION OF GRAPHITE

被引:24
作者
BOURDON, EBD
KOVARIK, P
PRINCE, RH
机构
[1] Department of Physics and Astronomy, York University, Toronto, Ont.
关键词
D O I
10.1016/0925-9635(93)90095-J
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We report the first evidence for the production of crystalline phases of diamond using laser ablation of graphite, extending an earlier report in which amorphous carbon or hydrogenated amorphous carbon films were produced using pulsed excimer radiation and hydrogen at a pressure of up to 100 Torr. Here, the ablating laser radiation was 308 nm, 40 mJ pulse-1, 10 pulses s-1 in hydrogen at 10 Torr and was simultaneously used to process heteroepitaxial film growth on silica optically. On the basis of transmission electron diffraction, it is proposed that nucleation occurs via the formation of SiC at the interface, analogous to results on silica using chemical vapour deposition. The morphology, revealed by scanning electron microscopy, shows micron-sized crystals of predominantly cubic orientation, with octahedral components. Raman spectroscopy shows a little graphitic character, but lacks the characteristic 1332 cm-1 line; the absence of this feature is assigned to the reduction in symmetry of the microcrystalline morphology, because of either structural or chemical effects.
引用
收藏
页码:425 / 431
页数:7
相关论文
共 23 条
[1]   DIAMOND THIN-FILMS - PREPARATION, CHARACTERIZATION AND SELECTED APPLICATIONS - PROGRESS REPORT [J].
BACHMANN, PK ;
LEERS, D ;
WIECHERT, DU .
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1991, 95 (11) :1390-1400
[2]   CHARACTERIZATION OF DIAMOND-LIKE FILMS PREPARED BY LASER ABLATION OF GRAPHITE [J].
BOURDON, EBD ;
DULEY, WW ;
JONES, AP ;
PRINCE, RH .
SURFACE & COATINGS TECHNOLOGY, 1991, 47 (1-3) :509-516
[3]   GROWTH MECHANISMS OF DIAMOND-LIKE FILMS FORMED BY LASER ABLATION OF GRAPHITE [J].
BOURDON, EBD ;
PRINCE, RH .
APPLIED SURFACE SCIENCE, 1991, 48-9 :50-54
[4]  
BOURDON EBD, 1836, Patent No. 821416
[5]  
BOURDON EBD, 1992, Patent No. 20591854
[6]   GROWTH OF THIN-FILMS BY LASER-INDUCED EVAPORATION [J].
CHEUNG, JT ;
SANKUR, H .
CRC CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES, 1988, 15 (01) :63-109
[7]   LASER PLASMA DIAMOND [J].
DAVANLOO, F ;
JUENGERMAN, EM ;
JANDER, DR ;
LEE, TJ ;
COLLINS, CB .
JOURNAL OF MATERIALS RESEARCH, 1990, 5 (11) :2398-2404
[8]   INFLUENCE OF SUBSTRATE TOPOGRAPHY ON THE NUCLEATION OF DIAMOND THIN-FILMS [J].
DENNIG, PA ;
STEVENSON, DA .
APPLIED PHYSICS LETTERS, 1991, 59 (13) :1562-1564
[9]   THE EARLY STAGES OF GROWTH OF CRYSTALLINE, DIAMOND-LIKE FILMS ON SI(100) BY PULSED LASER EVAPORATION OF GRAPHITE [J].
FERRER, S ;
COMIN, F ;
MARTIN, JA ;
VAZQUEZ, L ;
BERNARD, P .
SURFACE SCIENCE, 1991, 251 :960-964
[10]   HOMOGENEOUS NUCLEATION OF DIAMOND POWDER IN THE GAS-PHASE [J].
FRENKLACH, M ;
KEMATICK, R ;
HUANG, D ;
HOWARD, W ;
SPEAR, KE ;
PHELPS, AW ;
KOBA, R .
JOURNAL OF APPLIED PHYSICS, 1989, 66 (01) :395-399