| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | plutao.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | J8LNKAN8RW/3C645BP |
| Repository | dpi.inpe.br/plutao/2012/06.21.20.59 (restricted access) |
| Last Update | 2012:08.30.14.27.20 (UTC) administrator |
| Metadata Repository | dpi.inpe.br/plutao/2012/06.21.20.59.40 |
| Metadata Last Update | 2018:06.05.00.01.49 (UTC) administrator |
| DOI | 10.1016/j.diamond.2012.01.028 |
| ISSN | 0925-9635 |
| Label | lattes: 3455204481678421 4 GavinierGavHamTraCor:2012:VaRoRe |
| Citation Key | BarbosaHammTravCora:2012:VaRoRe |
| Title | The Valuable Role of Renucleation Rate in Ultrananocrystalline Diamond Growth  |
| Project | CAPES/PNPD (02491/09-5) and FAPESP (2007/00013-4) |
| Year | 2012 |
| Month | Mar. |
| Access Date | 2024, May 19 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 867 KiB |
| 2. Context | |
| Author | 1 Barbosa, Divani C 2 Hammer, Peter 3 Trava-Airoldi, Vladimir Jesus 4 Corat, Evaldo José |
| Resume Identifier | 1 2 3 4 8JMKD3MGP5W/3C9JH33 |
| Group | 1 2 3 LAS-CTE-INPE-MCTI-GOV-BR 4 LAS-CTE-INPE-MCTI-GOV-BR |
| Affiliation | 1 UNESP, São Paulo State University, Institute of Chemistry, 14801-970 Araraquara, SP, Brazil 2 3 Instituto Nacional de Pesquisas Espaciais (INPE) 4 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Author e-Mail Address | 1 divani@las.inpe.br 2 3 vladimir@las.inpe.br 4 corat@las.inpe.br |
| e-Mail Address | vladimir@las.inpe.br |
| Journal | Diamond and Related Materials |
| Volume | 23 |
| Pages | 112-119 |
| Secondary Mark | B2_ASTRONOMIA_/_FÍSICA A1_ENGENHARIAS_II A2_ENGENHARIAS_III A1_ENGENHARIAS_IV A1_MATERIAIS B1_QUÍMICA |
| History (UTC) | 2012-06-22 00:11:01 :: lattes -> administrator :: 2012 2012-07-26 20:08:44 :: administrator -> secretaria.cpa@dir.inpe.br :: 2012 2012-08-30 14:27:20 :: secretaria.cpa@dir.inpe.br -> administrator :: 2012 2012-10-03 08:19:17 :: administrator -> secretaria.cpa@dir.inpe.br :: 2012 2012-12-26 18:42:29 :: secretaria.cpa@dir.inpe.br -> administrator :: 2012 2018-06-05 00:01:49 :: administrator -> marciana :: 2012 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Version Type | publisher |
| Keywords | Argon Chemical bonds Chemical vapor deposition Diamond deposits Diamond films Flow rate Hydrogen Methanation Morphology Raman scattering Raman spectroscopy Scanning electron microscopy X-ray diffraction X-ray photoelectron spectroscopy |
| Abstract | This is a comprehensive study of the ultrananocrystalline diamond renucleation rate. The films deposited in a hot-filament chemical vapor deposition system (HFCVD) used an argon rich environment (90 vol.%), known as ideal for ultrananocrystalline diamond deposition. Substrate temperature (750°C), total pressure (30 Torr) argon flow rate (180 sccm) were constant in all experiments. Methane concentrations of 0.25, 0.5, 1, 1.5 and 2 vol.% balanced with hydrogen to a total flow rate of 20 sccm. Scanning electron microscopy (SEM) let morphology inspection. Visible-Raman scattering leaded to estimating relative influence of sp2 bonds. X-ray photoelectron spectroscopy (XPS) measured the chemical bonds distribution. X-ray diffraction assessed crystallinity and diamond renucleation rates. The increase in methane content in the gas mixture promotes morphology changes from micro (faceted), to nano (cauliflower), and to ultrananocrystalline (ballas-like) diamond. It reaches a lamellar graphitic structure at the higher methane concentration. This transition is concurrent with: a decrease of film specific mass, an increase of diamond renucleation rate, an increase of sp2 phase content, as seen by Raman spectroscopy and, an increase of C-H bond associated with C-C bond, as measured by x-ray photoelectron spectroscopy. Renucleation shows up as a very important process that presents a quadratic correlation with [CH4] in the feed gas. This new result may help bridging MCD, NCD and UNCD into a single understanding of diamond growth. |
| Area | FISMAT |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAS > The Valuable Role... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | pt |
| Target File | Barbosa_et_al_2012.pdf |
| User Group | administrator lattes secretaria.cpa@dir.inpe.br |
| Visibility | shown |
| Archiving Policy | denypublisher denyfinaldraft24 |
| Read Permission | deny from all and allow from 150.163 |
| Update Permission | not transferred |
| 5. Allied materials | |
| Linking | Trabalho Vinculado à Tese/Dissertação |
| Next Higher Units | 8JMKD3MGPCW/3ESR3H2 |
| Dissemination | WEBSCI; PORTALCAPES; COMPENDEX. |
| Host Collection | dpi.inpe.br/plutao@80/2008/08.19.15.01 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel format isbn lineage mark mirrorrepository nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress readergroup rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarytype typeofwork url |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |