Analytical Services: Nuclear Magnetic Resonance
Michael J. Kelly, Sandia National Laboratories
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General Use |
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- Phase analysis |
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- Electronic structure of metals |
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- Near-neighbor environment of atoms in solids |
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- Measures rate of kinetic processes, for example molecular reorientation or diffusion |
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- Magnetic structural studies |
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- Molecular structure of organic compounds |
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- Quantitative analysis of specific components and functional groups |
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Examples of Applications |
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- Detection of phase changes |
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- Study of hydrogen diffusion in metals |
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- Studies of long-range order in intermetallic compounds |
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- Spin wave studies in ferromagnetic materials |
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- Effect of pressure on electronic structure |
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- Isomer identification and quantification |
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- Determination of copolymer ratios |
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Samples |
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- Form: Inorganic powders, thin wires, or thin foils,
with one dimension small compared with the radio frequency
skin depth, generally 10 |
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- Size; Several grams (inorganic) to 0.1 g (organic) |
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Estimated Analysis Time |
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- 30 min to 48 h |
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Capabilities of Related Techniques |
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- Optical metallography: Shows morphology and number of phases present |
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- X-ray diffraction: Gives related crystal structure information |
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- Mössbauer effect: Provides a detectable effect in the presence of many defects |
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- Infrared/Fourier transform infrared spectroscopy: More sensitive for compound identification; applicable to gases; easier data interpretation |
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- Gas chromatography/mass spectrometry: Useful for identification of complex mixtures; more sensitive |
Reprinted with permission of ASM International®.
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