Browsing Exact and Earth Sciences by Subject "Háfnio"
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Hydrogen trapping in oxigen-deficient hafnium silicates
(2007) [Journal article]Isotopic substitution, nuclear reaction analysis, and x-ray photoelectron spectroscopy were employed to show that oxygen-deficient hafnium (Hf) silicates trap hydrogen atoms. Based on this experimental observation, we used ... -
Reduction of hafnium oxide and hafnium silicate by rhenium and platinum
(2006) [Journal article]We report chemical interactions of Hf-based dielectrics with Re and Pt overlayers during annealing. Reduction of the Hf to a suboxide is observed by x-ray photoelectron spectroscopy, along with a decrease in total oxygen ... -
Stabilization of higher-k tetragonal HfO/sub 2/ by SiO/sub 2/ admixture enabling thermally stable metal-insulator-metal capacitors
(2007) [Journal article]The authors report the relationship between HfO2 crystalline phase and the resulting electrical properties. Crystallization of amorphous HfO2 into the monoclinic phase led to a significant increase in leakage current and ...