Посилання:Study of nanoporous in humidity-sensitive MgAl₂O₄ ceramics with positron annihilation lifetime spectroscopy / H. Klym // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2011. — Т. 14, № 1. — С. 109-113. — Бібліогр.: 23 назв. — англ.
Підтримка:The author thanks to Dr. I. Hadzaman (Drohobych Ivan
Franko State Pedagogical University, Drohobych,
Ukraine) for sample preparation and Dr. A. Ingram
(Opole University of Technology, Poland) for assistance
in PALS experiments.
It has been shown that positron annihilation lifetime spectroscopy is a quite
promising tool for nanostructural characterization of humidity-sensitive spinel-type
MgAl₂O₄ceramics. The results have been achieved using the four-component fitting
procedure with arbitrary lifetimes that is applied to mathematically treat the measured
spectra. It has been shown that the Tao-Eldrup model is adequate to calculate the
nanopore size in MgAl₂O₄ ceramics if using the lifetime values of the third and fourth
components.