Free-volume defects/nanopores conversion of temperature-sensitive Cu0.1Ni0.8Co0.2Mn1.9O4 ceramics caused by addition phase and monolithization process

The defects/nanopores conversion in the Cu 0.1 Ni 0.8 Co 0.2 Mn 1.9 O 4 ceramics caused by addition phase and monolithization process was studied by positron annihilation lifetime spectroscopy using three-component decomposition of spectra within mixed positron- and positronium-trapping modes. It is...

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Bibliographic Details
Published in:Applied nanoscience 2022-04, Vol.12 (4), p.1347-1354
Main Authors: Klym, H., Hadzaman, I., Kostiv, Yu, Yatsyshyn, S., Stadnyk, B.
Format: Article
Language:English
Subjects:
Agglomeration
Ceramics
Chemistry and Materials Science
Conversion
Defects
Materials Science
Membrane Biology
Nanochemistry
Nanotechnology
Nanotechnology and Microengineering
Nickel oxides
Original Article
Positron annihilation
Positronium
Service life assessment
Spectrum analysis
Trapping
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Summary:The defects/nanopores conversion in the Cu 0.1 Ni 0.8 Co 0.2 Mn 1.9 O 4 ceramics caused by addition phase and monolithization process was studied by positron annihilation lifetime spectroscopy using three-component decomposition of spectra within mixed positron- and positronium-trapping modes. It is established that a larger amount of addition NiO phase in ceramics resulted in void fragmentation with future agglomeration due to monolitization processes. The NiO extracted near intergranular boundaries formed new positron-trapping sites in the Cu 0.1 Ni 0.8 Co 0.2 Mn 1.9 O 4 ceramics. Monolithization of ceramics is accompanied by agglomeration of nanopores with radius centered near 0.3 nm.
ISSN:2190-5509
2190-5517
DOI:10.1007/s13204-021-01963-9