Analyses of lithium-doped and pure magnesium diboride using ultraviolet nano- and femtosecond laser ablation inductively coupled plasma mass spectrometry

Lithium-doped and pure magnesium diboride crystals were quantified by nanosecond and femtosecond laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). In both cases, non-matrix matched calibration using a silicate glass (NIST SRM 610) was performed. The application of nanosecond L...

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Published inJournal of analytical atomic spectrometry Vol. 25; no. 2; pp. 193 - 195
Main Authors Wälle, M., Koch, J., Tabersky, D., Hametner, K., Zhigadlo, N. D., Katrych, S., Karpinski, J., Günther, D.
Format Journal Article
LanguageEnglish
Published 01.01.2010
Subjects
Borides
Femtosecond
Magnesium
Magnesium compounds
Nanocomposites
Nanomaterials
Nanostructure
Stoichiometry
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Summary:Lithium-doped and pure magnesium diboride crystals were quantified by nanosecond and femtosecond laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). In both cases, non-matrix matched calibration using a silicate glass (NIST SRM 610) was performed. The application of nanosecond LA-ICP-MS resulted in a boron and magnesium stoichiometry of MgB. In contrast, data obtained by femtosecond LA-ICP-MS indicate a boron and magnesium stoichiometry of MgB2, which was supported by supplementary measurements on the basis of X-ray diffraction using peak refinement. Concentration discrepancies of main constituents that suggest a wrong stoichiometry, as found for ns-LA-ICP-MS, have not yet been reported and can, therefore, be considered an example of extreme laser-induced elemental fractionation.
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ISSN:0267-9477
1364-5544
DOI:10.1039/B914547H