Microstructure and Nanoscopic Porosity in Black Pd Films
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F20%3A43920594" target="_blank" >RIV/60461373:22340/20:43920594 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/20:00539094 RIV/61389021:_____/20:00539094 RIV/00216208:11320/20:10423656
Result on the web
<a href="http://przyrbwn.icm.edu.pl/APP/PDF/137/app137z2p33.pdf" target="_blank" >http://przyrbwn.icm.edu.pl/APP/PDF/137/app137z2p33.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.12693/APhysPolA.137.222" target="_blank" >10.12693/APhysPolA.137.222</a>
Alternative languages
Result language
angličtina
Original language name
Microstructure and Nanoscopic Porosity in Black Pd Films
Original language description
In the present work the microstructure of a black Pd film prepared by thermal evaporation and a glossy Pd film deposited by magnetron sputtering was compared. While the glossy Pd film exhibits typical polycrystalline structure with column-like grains, the black Pd film has fractal-like porous structure. Positron annihilation spectroscopy revealed that positronium is formed in nanoscopic cavities of the black Pd film. In conventional metals positronium does not form due to screening by conduction electrons. However, in porous metals containing nanoscopic porosity a thermalized positron may pick an electron on inner surface of a pore and escape into a cavity forming positronium. The average size of nanoscopic pores in the black Pd film was determined from the lifetime of long-lived ortho-positronium component.
Czech name
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Czech description
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Classification
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
21001 - Nano-materials (production and properties)
Result continuities
Project
<a href="/en/project/GA18-09347S" target="_blank" >GA18-09347S: Black metals for utilization in quartz crystal microbalance gas sensors</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Acta Physica Polonica A
ISSN
0587-4246
e-ISSN
—
Volume of the periodical
137
Issue of the periodical within the volume
2
Country of publishing house
PL - POLAND
Number of pages
5
Pages from-to
222-226
UT code for WoS article
000529332100034
EID of the result in the Scopus database
2-s2.0-85083893027