NMR: hyperfine interactions in oxides and metals

A NMR characterisation is given of various polymorphs of TiO₂ (anatase, rutile and brookite), Ti₂O₃, perovskites CaTiO₃ and BaTiO₃, FeTiO₃, TiB₂, titanium metal, the titanium aluminides Ti₃Al, TiAl, TiAl₂, TiAl₃, and TiAg. Values of chemical or Knight shift, nuclear quadrupole coupling constant and asymmetry parameter were derived from the (1/2, −1/2) powder lineshapes. For TiB₂, titanium metal, TiAl, and TiAl₃, where ±(1/2, 3/2), and higher satellite transitions were observed, a value for the axial component of the Knight shift was obtained.