Water-sorption processes in nanostructured ceramics for sensor electronics studied with positron annihilation instruments

Author

Klym, H. ; Ingram, A. ; Shpotyuk, O. ; Hadzaman, I.

Author_Institution

Lviv Polytech. Nat. Univ., Lviv, Ukraine

fYear

2012

fDate

13-16 May 2012

Firstpage

155

Lastpage

158

Abstract

The water-sensitive processes in nanoporous MgAl₂O₄ ceramics are studied. It is shown that water-sorption processes in magnesium aluminate ceramics leads to corresponding increase in positron trapping rates of extended defects located near intergranual boundaries. This catalytic affect has reversible nature, being strongly dependent on sorption water fluxes in ceramics. The fixation of all water-dependent positron trapping inputs allow to refine the most significant changes in positron trapping rate of extended defects.

Keywords

aluminium compounds; ceramics; magnesium compounds; nanoelectronics; nanoporous materials; positron annihilation; sorption; MgAl₂O₄; catalytic affect; intergranual boundaries; magnesium aluminate ceramics; nanoporous ceramics; nanostructured ceramics; positron annihilation instrument; positron trapping rate; sensor electronics; sorption water fluxes; water-sensitive process; water-sorption process; Ceramics; Charge carrier processes; Fitting; Humidity; Positrons; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Microelectronics (MIEL), 2012 28th International Conference on

Conference_Location

Nis

ISSN

pending

Print_ISBN

978-1-4673-0237-1

Type

conf

DOI

10.1109/MIEL.2012.6222821

Filename

6222821