6533b870fe1ef96bd12cf0de

RESEARCH PRODUCT

Positron annihilation characterization of free volume in microand macro-modified Cu0.4Co0.4Ni0.4Mn1.8O4ceramics

Halyna KlymV. SolntsevAnatoly I. PopovO. ShpotyukAdam IngramOleksandra HotraIvan Hadzaman

subject

010302 applied physicsMaterials sciencePhysics and Astronomy (miscellaneous)Scanning electron microscopeGeneral Physics and Astronomy02 engineering and technology021001 nanoscience & nanotechnology01 natural sciencesMolecular physicsCharacterization (materials science)Nuclear physicsNanoporePositronVolume (thermodynamics)visual_art0103 physical sciencesvisual_art.visual_art_mediumCeramicPhysics::Chemical Physics0210 nano-technologyPorositySpectroscopy

description

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.

yearjournalcountryeditionlanguage
2016-07-01
http://www.scopus.com/inward/record.url?eid=2-s2.0-84973309370&partnerID=MN8TOARS