Journal article · Conference paper
Uncertainty budget for determinations of mean isomer shift from Mössbauer spectra
Department of Micro- and Nanotechnology, Technical University of Denmark1
Magnetic Systems, Department of Micro- and Nanotechnology, Technical University of Denmark2
University College London3
Physikalisch-Technische Bundesanstalt4
Department of Physics, Technical University of Denmark5
Neutrons and X-rays for Materials Physics, Department of Physics, Technical University of Denmark6
The magnetite/maghemite content within iron oxide nanoparticles can be determined using the mean isomer shift (δ¯¯). However, accurate characterisation of the composition is limited by the uncertainty associated with δ¯¯. We have identified four independent sources of uncertainty and developed a quantitative expression for the uncertainty budget.
Sources of uncertainty are categorised as follows: that from the fitting of the Mössbauer spectrum (σ fit), that of the calibration of the α-Fe reference spectrum (σ cal), thermal corrections to the spectrum due to second order Doppler shift (SODS) (σ Δδ ) and other experimental errors (σ err). Each contribution is discussed in detail using 57Fe Mössbauer spectra obtained from an iron oxide nanoparticle system at temperatures between 16 K and 295 K on different spectrometers in two different laboratories.
Language: | English |
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Publisher: | Springer International Publishing |
Year: | 2016 |
Pages: | 1-11 |
Proceedings: | The International Conference on the Applications of the Mössbauer Effect |
ISSN: | 15729540 and 03043843 |
Types: | Journal article and Conference paper |
DOI: | 10.1007/s10751-016-1253-1 |
ORCIDs: | Hansen, Mikkel Fougt and Frandsen, Cathrine |