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Microcalorimeter energy-dispersive spectrometry using a low voltage scanning electron microscope
1National Institute of Standards and Technology (NIST), Boulder, CO 80303, USA NIST, Gaithersburg, MD 20899-8371, USA.
Journal of Microscopy
|July 8, 2000
Summary
The new microcalorimeter energy-dispersive spectrometer (µcal EDS) excels at low-beam-energy X-ray microanalysis. This advanced instrument provides significant advantages for analyzing materials like WSi2, TiN, and BaTiO3.
Area of Science:
- Materials Science
- Analytical Chemistry
- Physics
Background:
- X-ray microanalysis is crucial for material characterization.
- Low-beam-energy analysis presents unique challenges.
- Existing energy-dispersive spectrometers have limitations in this range.
Purpose of the Study:
- To evaluate the performance of a prototype microcalorimeter energy-dispersive spectrometer (µcal EDS) developed at NIST.
- To demonstrate the advantages of µcal EDS for low-beam-energy microanalysis.
- To showcase its application in solving real-world microanalysis problems.
Main Methods:
- Development and testing of a prototype µcal EDS system.
- Operation in the low-energy range of 0.2-2 keV.
- Application to the analysis of specific materials and chemical states.
Main Results:
- The prototype µcal EDS demonstrates significant advantages for low-beam-energy microanalysis.
- Successful analysis of tungsten silicide (WSi2), titanium nitride (TiN), and barium titanate (BaTiO3) was achieved.
- Accurate measurement of chemical shifts in Fe and C compounds was performed.
Conclusions:
- The µcal EDS is a promising technology for advanced X-ray microanalysis.
- It offers superior performance for low-voltage and low-energy applications.
- This technology can effectively address challenges in microanalysis of various materials.
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