Positron annihilation characterization of free volume in micro- and macro-modified Cu0.4Co0.4Ni0.4Mn1.8O4 ceramics

Автор(и)

  • H. Klym Lviv Polytechnic National University, Ukraine
  • A. Ingram Physics Faculty of Opole University of Technology, Poland
  • O. Shpotyuk Vlokh Institute of Physical Optics, Lviv, Ukraine
  • I. Hadzaman Drohobych Ivan Franko State Pedagogical University, Ukraine
  • V. Solntsev V.E. Lashkaryov Institute of Semiconductor Physics of the National Academy of Sciences of Ukraine, Kiev, Ukraine
  • O. Hotra Lublin University of Technology, Poland
  • A.I. Popov Institute of Solid State Physics, University of Latvia, Latvia

DOI (Low Temperature Physics):


https://doi.org/10.1063/1.4959021%20

Ключові слова:

ceramics, free volume, nanopores, positron trapping, positronium decaying.

Анотація

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.

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Опубліковано

2016-05-18

Як цитувати

(1)
H. Klym, A. Ingram, O. Shpotyuk, I. Hadzaman, V. Solntsev, O. Hotra, and A.I. Popov, Positron annihilation characterization of free volume in micro- and macro-modified Cu0.4Co0.4Ni0.4Mn1.8O4 ceramics, Low Temp. Phys. 42, (2016) [Fiz. Nizk. Temp. 42, 764-769, (2016)] DOI: https://doi.org/10.1063/1.4959021 .

Номер

Том 42 № 7 (2016)

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