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Water adsorption properties of amorphous BaTiO3 thin films

✍ Scribed by B Chornik; VA Fuenzalida; CR Grahmann; R Labbé

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
382 KB
Volume
48
Category
Article
ISSN
0042-207X

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✦ Synopsis

Amorphous barium titanate films were flash evaporated on silicon and studied with X-ray photoelectron spectroscopy. After water adsorption, the surface oxygen Is photoelectron peak reveals the presence of hydroxyl groups. A thermal desorption experiment on a similar thin film evaporated on rhenium shows one peak of water partial pressure at about 480 K, which decreases after repeated cycles of adsorption and thermal desorption, suggesting that oxygen vacancies are filled up during desorption.

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