ISSN:
1432-0630
Keywords:
61.80 jh
;
82.80.pv
;
81.60.dq
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract Compositional and chemical changes in TiO2 and Ph, Ni, Al and Ba titanates induced by bombardment with Ar+ and O 2 + ons of different energies have been studied quantitatively by XPS. An increase of preferential loss of oxygen and, in case of PbTiO3, of lead has been observed when increasing the Ar+ ion energy from 3.5 to 10 keV. Because of oxygen loss, Ti4+ species reduce to Ti3+ and Ti2+. In addition, the loss of oxygen from PbTiO3 and NiTiO3 leads to the metallic state of nickel and lead, whereas aluminium and barium in Al2TiO5 and BaTiO3 maintain their chemical state (i.e., Al3+ and Ba2+). Bombardment with OZ ions of PbTiO3 and NiTiO3 leads to a partial reduction of Pb and Ni. This metallization and the preferential loss of lead are more efficient at higher ion energies for both, O 2 + and Ar+ bombardment. The results are discussed in terms of chemical stabilities and the possibility of oxygen diffusion in the bombarded oxides.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01567875
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