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Water-adsorption and desorption processes in the modified functional elements based on humidity-sensitive MgO-Al2O3 ceramics for microelectronics were studied using specialized positron annihilation lifetime system. It is shown that adsorption of water leads to transformation of positron annihilation spectra in the MgO-Al2O3 ceramics and reflects increasing of positron trapping near grain boundaries...
Positron-positronium annihilation spectrum were analyzed using four-component fitting procedures. It is shown that this technique can be used to investigation of nanopores transformation in humidity-sensitive MgO- Al2O3 ceramics as porosimetry method. It is established that the third component of lifetime spectra gives information about ortho-positronium decaying in nanopores with water and fourth...
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