Semiconductor Physics, Quantum Electronics & Optoelectronics. 2011. V. 14, N 1. P. 109-113.

Study of nanoporous in humidity-sensitive MgAl2O4 ceramics with positron annihilation lifetime spectroscopy
H. Klym

Scientific Research Company “Carat”, 202, Stryjska str., 79031 Lviv, Ukraine Lviv Polytechnic National University, 12, Bandera str., 79013 Lviv, Ukraine Phone: 8-0322-638303 ; e-mail:,

Abstract. It has been shown that positron annihilation lifetime spectroscopy is a quite promising tool for nanostructural characterization of humidity-sensitive spinel-type MgAl 2 O 4 ceramics. 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 MgAl 2 O 4 ceramics if using the lifetime values of the third and fourth components.

Keywords: nanopore, humidity-sensitive ceramics, sensor, spectroscopy.

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