Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Optica Applicata

1 2006

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Investigation of the aging of epitaxial LaNiO3-x films by X-ray photoelectron spectroscopy

Mickevicius S., Grebinskij S., Bondarenka V., Tvardauskas H., Vengalis B., Sliuziene K., Orłowski B. A., Drube W.

Optica Applicata

2006

Vol. 36, nr 2-3

235-243

The X-ray photoelectron spectroscopy (XPS) was performed to study surface and volume composition, valence states and the concentration of hydroxyl groups in epitaxial LaNiO3?x thin films after aging in air. The existence of at least few different forms of oxygen as lattice oxide, hydroxyl groups and adsorbed water in the samples is shown by XPS characterization. The lanthanum and nickel exist in oxide and hydroxide chemical states. The concentration of hydroxyl groups increases at the surface but it is distributed through the volume as well. It was found that the surface Ni/La concentration ratio is close to the stoichiometric bulk value.