Ni-mediated reactions in nanocrystalline diamond on Si substrates: the role of the oxide barrier

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00536232" target="_blank" >RIV/68378271:_____/20:00536232 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21230/20:00340993
Result on the web
<a href="http://hdl.handle.net/11104/0314049" target="_blank" >http://hdl.handle.net/11104/0314049</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d0ra00809e" target="_blank" >10.1039/d0ra00809e</a>

Result language
angličtina
Original language name
Ni-mediated reactions in nanocrystalline diamond on Si substrates: the role of the oxide barrier
Original language description
Manocrystalline diamond (NCD)films grown on Si substrates by microwave plasma enhanced chemicalvapor deposition (MWPECVD) were subjected to Ni-mediated graphitization to cover them witha conductive layer. Results of transmission electron microscopy including electron energy-lossspectroscopy of cross-sectional samples demonstrate that the oxide layer on Si substrates ( 5 nm nativeSiO2) has been damaged by microwave plasma during the early stage of NCD growth. During the heattreatment for graphitizing the NCD layer, the permeability or absence of the oxide barrier allow Ninanoparticles to diffuse into the Si substrate and cause additional solid-state reactions producingpyramidal crystals of NiSi2and SiC nanocrystals. The latter are found impinged into the NiSi2pyramidsbut only when the interfacial oxide layer is absent, replaced by amorphous SiC. The complex phasemorphology of the samples is also reflected in the temperature dependence of electrical conductivity,where multiple pathways of the electronic transport dominate in different temperature regions. Wepresent models explaining the observed cascade of solid-state reactions and resulting electronictransport properties of such heterostructures.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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