Laser‐induced recystallization and defects in ion‐implanted hexagonal SiC
作者:
V. V. Makarov,
T. Tuomi,
K. Naukkarinen,
M. Luomaja¨rvi,
M. Riihonen,
期刊:
Applied Physics Letters
(AIP Available online 1979)
卷期:
Volume 35,
issue 12
页码: 922-924
ISSN:0003-6951
年代: 1979
DOI:10.1063/1.91006
出版商: AIP
数据来源: AIP
摘要:
SiC(6H) crystals amorphized with14N+‐ion implantation were annealed with CO2laser pulses at intensities of 20–100 MW/cm2. Laser produced crystallization due to residual ray absorption was studied by means of optical spectroscopy,4He+‐ion backscattering spectrometry and channeling as well as Cu K&agr;1and synchrotron x‐ray diffraction topography. At low laser intensities topographs revealed linear and planar defects, which contributed to increased dechanneling independent of analyzing beam energy. Minimum of lattice disorder, which was in some regions of the laser impact area smaller than that obtained in thermal annealing, was attained at the peak laser intensities of about 50 MW/cm2.
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