Generation of microwave plasma under high pressure and fabrication of ultrafine carbon particles

Yagi, Hidetsugu; Ide, Takashi; Toyota, Hiromichi; Mori, Yusuke

doi:10.1557/jmr.1998.0239

Cited by 11 publications

(1 citation statement)

References 7 publications

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“…Hence, the surface tension creates compressive efforts. It is known that the UC parameter in silver, bismuth islets [11,12] and nanodiamonds [13] diminishes under an action of the surface tension forces. In nanodiamonds the UC parameter decreases to as low as 0.352 33 nm.…”

Section: Study Of the Pdf Substructurementioning

confidence: 99%

Investigation of the unit cell parameter and dislocation structure of polycrystalline diamond films

Samsonenko¹,

Samsonenko²,

Varyukhin³

et al. 2006

J. Phys.: Condens. Matter

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The values of the unit cell (UC) parameter were measured and elements of the internal structure were determined in polycrystalline diamond films (PDFs) using x-ray diffraction. It was established that the values of the UC parameter were connected with the dislocation densities in mosaic PDF crystallites. The dislocation density was calculated from measured microdistortions and dispersion in the blocks based on the surface stretch forces that arise on the boundaries between blocks. This allowed more precise computing of the dislocation density. A similar connection between the UC parameter and dislocation density also exists in epitaxial diamond films and in plastic deformed natural type IIb and Ic diamonds. A regular relationship between physical values of the UC parameter and dislocation density in mosaic diamond materials was determined using mathematical modelling. An increase in the dislocation density results in a decrease in the UC parameter from 0.356 689 nm in more pure and perfect type IIa diamonds to a limiting value of 0.356 42 nm in PDF samples.

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Section: Study Of the Pdf Substructurementioning

confidence: 99%