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

Autor: Klym, H., Hadzaman, I., Kostiv, Yu, Yatsyshyn, S., Stadnyk, B.
Zdroj: Applied Nanoscience; Apr2022, Vol. 12 Issue 4, p1347-1354, 8p
Abstrakt: The defects/nanopores conversion in the Cu0.1Ni0.8Co0.2Mn1.9O4 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 Cu0.1Ni0.8Co0.2Mn1.9O4 ceramics. Monolithization of ceramics is accompanied by agglomeration of nanopores with radius centered near 0.3 nm. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
Externí odkaz: