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47,49Ti NMR: hyperfine interactions in oxides and metals
T J Bastow1, M A Gibson, C T Forwood
1Division of Manufacturing Science and Technology, CSIRO, Clayton, Victoria, Australia. bastow@mst.csiro.au
Solid State Nuclear Magnetic Resonance
|November 4, 1998
Summary
This study presents 47,49Ti Nuclear Magnetic Resonance (NMR) characterization of various titanium compounds, including oxides, perovskites, and aluminides. The findings provide detailed insights into their electronic structures and bonding characteristics.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Nuclear Magnetic Resonance Spectroscopy
Background:
- Titanium compounds exhibit diverse structures and properties.
- Nuclear Magnetic Resonance (NMR) is a powerful tool for probing local electronic environments.
Purpose of the Study:
- To characterize various titanium-containing materials using 47,49Ti NMR.
- To determine key NMR parameters like chemical shift and nuclear quadrupole coupling constants.
Main Methods:
- 47,49Ti Nuclear Magnetic Resonance (NMR) spectroscopy.
- Analysis of powder lineshapes for (1/2, -1/2) transitions.
- Observation of satellite transitions for specific materials.
Main Results:
- Detailed NMR characterization of TiO2 polymorphs (anatase, rutile, brookite), Ti2O3, CaTiO3, BaTiO3, FeTiO3, TiB2, titanium metal, Ti3Al, TiAl, TiAl2, TiAl3, and TiAg.
- Derivation of chemical shift, nuclear quadrupole coupling constant, and asymmetry parameters.
- Determination of the axial component of the Knight shift for TiB2, titanium metal, TiAl, and TiAl3.
Conclusions:
- 47,49Ti NMR provides valuable information on the electronic structure of diverse titanium compounds.
- The study establishes a foundation for further NMR investigations of titanium-based materials.