Characterization of Nanoporous Ceramic Materials Using Combined XRD, XPS and PAL Spectroscopy

Some functional nanoporous materials such as dielectric magnesium aluminate MgAl2O4 ceramics with spinel structure are widely used for environment humidity sensors. It is established that functionality of these humidity-sensitive ceramics depends on their microstructural peculiarities concerning mainly of phase composition. This work is aimed to investigate a microstructure of sintered nanoporous magnesium aluminate materials using combined X-ray diffractometry (XRD), high-resolution X-ray photoelectron spectroscopy (XPS) and positron annihilation (PAL) methods.