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

H. Klym; A. Ingram; O. Shpotyuk; I. Hadzaman; V. Solntsev; O. Hotra; A. I. Popov

Positron annihilation characterization of free volume in microand macro-modified Cu_0.4Co_0.4Ni_0.4Mn_1.8O₄ceramics

H. Klym
, A. Ingram
, O. Shpotyuk
, I. Hadzaman
, V. Solntsev
, O. Hotra
, A. I. Popov

Laboratory of Kinetics in Self-Organizing Systems, Institute of Solid State Physics

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Free volume and pore size distribution size in functional micro and macro-micro-modified Cu_0.4Co_0.4Ni_0.4Mn_1.8O₄ceramics 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 Cu_0.4Co_0.4Ni_0.4Mn_1.8O₄ceramics. 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. PACS: 78.70.Bj Positron annihilation; 71.60.+z Positron states; 81.05.Mh Cermets, ceramic and refractory composites; 82.30.Gg Positronium chemistry.

Original language	English
Pages (from-to)	764-769
Number of pages	6
Journal	Fizika Nizkikh Temperatur
Volume	42
Issue number	7
Publication status	Published - Jul 2016

Keywords

Ceramics
Free volume
Nanopores
Positron trapping
Positronium decaying

Cite this

@article{3bb39e4eb75c4a0ea5bc7ba1c69a80cd,

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

abstract = "Free volume and pore size distribution size in functional micro and macro-micro-modified Cu0.4Co0.4Ni0.4Mn1.8O4ceramics 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 Cu0.4Co0.4Ni0.4Mn1.8O4ceramics. 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. PACS: 78.70.Bj Positron annihilation; 71.60.+z Positron states; 81.05.Mh Cermets, ceramic and refractory composites; 82.30.Gg Positronium chemistry.",

keywords = "Ceramics, Free volume, Nanopores, Positron trapping, Positronium decaying",

author = "H. Klym and A. Ingram and O. Shpotyuk and I. Hadzaman and V. Solntsev and O. Hotra and Popov, \{A. I.\}",

note = "Publisher Copyright: {\textcopyright} H. Klym, A. Ingram, O. Shpotyuk, I. Hadzaman, V. Solntsev, O. Hotra, and A.I. Popov, 2016.",

year = "2016",

month = jul,

language = "English",

volume = "42",

pages = "764--769",

journal = "Fizika Nizkikh Temperatur",

issn = "0132-6414",

publisher = "B.Verkin Institute for Low Temperature Physics and Engineering of the NAS of Ukraine",

number = "7",

}

TY - JOUR

T1 - Positron annihilation characterization of free volume in microand macro-modified Cu0.4Co0.4Ni0.4Mn1.8O4ceramics

AU - Klym, H.

AU - Ingram, A.

AU - Shpotyuk, O.

AU - Hadzaman, I.

AU - Solntsev, V.

AU - Hotra, O.

AU - Popov, A. I.

N1 - Publisher Copyright: © H. Klym, A. Ingram, O. Shpotyuk, I. Hadzaman, V. Solntsev, O. Hotra, and A.I. Popov, 2016.

PY - 2016/7

Y1 - 2016/7

N2 - Free volume and pore size distribution size in functional micro and macro-micro-modified Cu0.4Co0.4Ni0.4Mn1.8O4ceramics 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 Cu0.4Co0.4Ni0.4Mn1.8O4ceramics. 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. PACS: 78.70.Bj Positron annihilation; 71.60.+z Positron states; 81.05.Mh Cermets, ceramic and refractory composites; 82.30.Gg Positronium chemistry.

AB - Free volume and pore size distribution size in functional micro and macro-micro-modified Cu0.4Co0.4Ni0.4Mn1.8O4ceramics 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 Cu0.4Co0.4Ni0.4Mn1.8O4ceramics. 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. PACS: 78.70.Bj Positron annihilation; 71.60.+z Positron states; 81.05.Mh Cermets, ceramic and refractory composites; 82.30.Gg Positronium chemistry.

KW - Ceramics

KW - Free volume

KW - Nanopores

KW - Positron trapping

KW - Positronium decaying

UR - https://www.scopus.com/pages/publications/84973309370

M3 - Article

AN - SCOPUS:84973309370

SN - 0132-6414

VL - 42

SP - 764

EP - 769

JO - Fizika Nizkikh Temperatur

JF - Fizika Nizkikh Temperatur

IS - 7

ER -

Positron annihilation characterization of free volume in microand macro-modified Cu_0.4Co_0.4Ni_0.4Mn_1.8O₄ceramics

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