Journal
LOW TEMPERATURE PHYSICS
Volume 42, Issue 7, Pages 601-605Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4959021
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Funding
- Project DB/KIBER [0115U000446]
- Latvian State research program IMIS2
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Free volume and pore size distribution size in functional micro and macro-micro-modified Cu0.4Co0.4Ni0.4Mn1.8O4 ceramics are characterized by positron annihilation lifetime spectroscopy in comparison with Hg-porosimetry and scanning electron microscopy technique. Positron annihilation results are interpreted in terms of model implication positron trapping and ortho-positronium decaying. It is shown that free volume of positron traps are the same type for macro and micro modified Cu0.4Co0.4Ni0.4Mn1.8O4 ceramics. Classic Tao-Eldrup model in spherical approximation is used to calculation of the size of nanopores smaller than 2 nm using the ortho-positronium lifetime. Published by AIP Publishing.
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