Mechanism of formation of 〈110〉 oriented fivefold microcrystallites in diamond films

Abstract

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Microstructural Studies Of Laser Enhanced, Filament Assisted Deposition Of Diamond Films

“…The grain is highly defective with a large number of twins. We had shown earlier with HRTEM [12 ] that the {200} planes of diamond (d200 ==1 -78 A) match with the {022} planes (d220 = 1*92 A) of the underlying silicon substrate, the planar spacing match within 7 % of each other. In the perpendicular direction, the {022} planes of the diamond (d()22 = 1-26 A) align with the (044) planes (d()44 = 0.96 A) of the silicon.…”

“…The grain is highly defective with a large number of twins. We had shown earlier with HRTEM [12 ] that the (200) planes of diamond (d200 =1.78 A) match with the f022) planes (d220 = 1.92 A) of the underlying silicon substrate. the planar spacing match within 7 % of each other.…”

Syntheses, Structures and Properties of Boron Nitride Nanoparticles

“…Au 18 , C 25 diamond, and B 12 N 13 clusters were optimized by molecular orbital and mechanics calculations, and the total energy was calculated to be 836, 8.5 and 1.1 kJ/atom Á mol, respectively. The total energy per atom Á mol of C 25 structure is smaller compared with that of Au clusters.…”

Microstructure stability and evolution in CVD carbonyl Ni materials upon annealing – Grain growth and detwinning process

“…These particles are mostly formed during deposition [20,21] or under certain thermal activation conditions [22,23]. Interestingly, the fivefold twinned structures in FCC materials reported so far were mostly in the early stage of crystal growth [24][25][26][27][28][29] and hence such a structure is mainly associated with nano-wires, nano-particles and thin films. As a matter of fact, it was reported that, due to the geometrical arrangement of the FCC structure, fivefold twinned grains should have distortion along the central axis; as the grains grow during the deposition process, internal stress will build up due to the distortion [20].…”

“…The multiply twinned particles in nanometer scale have been reported from time to time in many materials [19][20][21][22][23][24][25][26][27][28][29]. These particles are mostly formed during deposition [20,21] or under certain thermal activation conditions [22,23].…”