Abstract:Positron annihilation lifetime spectroscopy (PALS) is used to investigate the detailed structure of amorphous alumina tubes prepared via thermohydrolysis of anhydrous AlCl 3 . The results demonstrate that PALS is a sensitive probe of the structure of amorphous materials, capable of distinguishing between the structures of amorphous alumina tubes and amorphous alumina prepared by a standard procedure, which are shown to differ slightly in the concentration and size of free-volume elements. The observed distinct… Show more
Positron annihilation spectroscopy is used to characterize pore size distributions in alumina thin films. Differences in the microstructure can be correlated to dielectric behaviour and insulating properties.
Positron annihilation spectroscopy is used to characterize pore size distributions in alumina thin films. Differences in the microstructure can be correlated to dielectric behaviour and insulating properties.
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