Mass spectrometry of secondary negative ions emitted from low-energy sputtered YBCO ceramics

Results show that reduction of the primary ion energy reduces the yield of heavy secondary ions. It was observed that the supply of oxygen to a sample bombarded by Ar\++\- ions enhances the yield of secondary negative ions; this yield is further enhanced by switching to positive oxygen primary ions....

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 1995-05, Vol.28 (5), p.996-1000
Main Authors: Ilyinsky, L S, Emmoth, B, Hollmann, E K, Zaitsev, A G, Lavrentyev, A A
Format: Article
Language:English
Subjects:
Atomic, molecular, and ion beam impact and interactions with surfaces
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cuprates superconductors (high tc and insulating parent compounds)
Electron and ion emission by liquids and solids
impact phenomena
Exact sciences and technology
High-Tc compounds
Impact phenomena (including electron spectra and sputtering)
Physics
Superconductivity
Y-based cuprates
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Summary:Results show that reduction of the primary ion energy reduces the yield of heavy secondary ions. It was observed that the supply of oxygen to a sample bombarded by Ar\++\- ions enhances the yield of secondary negative ions; this yield is further enhanced by switching to positive oxygen primary ions. The bombardment of a YBCO ceramic sample by oxygen ions is characterized by enhancement of the yield of barium and barium-containing molecular ions. (Original abstract-amended)
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/28/5/022