title: Pure-phase two-dimensional niobium-93 nutation spectroscopic study of lead metaniobate and the piezoelectric lead magnesium niobate.
abstract: An NMR technique to measure pure-phase two-dimensional nutation NMR spectra, that yields higher resolution than traditional nutation experiments is reported. Using this technique 93Nb nutation NMR spectra of PbNb2O6 and the technologically important Pb(Mg1/3Nb2/3)O3 (PMN) have been measured and the quadrupolar coupling constant of the niobium site in PbNb2O6 (C(Q) = 19 +/- 2 MHz) determined. Estimates of the quadrupolar coupling constants for three different resonances associated with different niobium(V) sites in PMN (C(Q) < 1.2 MHz, approximately 17 MHz, and > 62 MHz) are also reported.
authors.affiliation: Department of Chemistry and Biochemistry, South Dakota State University, Brookings 57007, USA.
authors.forename: S
authors.initials: S
authors.lastname: Prasad
authors.forename: P
authors.initials: P
authors.lastname: Zhao
authors.forename: J
authors.initials: J
authors.lastname: Huang
authors.forename: J J
authors.initials: JJ
authors.lastname: Fitzgerald
authors.forename: J S
authors.initials: JS
authors.lastname: Shore
mesh_terms: D007854:Lead / Q000032:analysis*; D008274:Magnesium / Q000032:analysis; D009682:Magnetic Resonance Spectroscopy; D009556:Niobium / Q000032:analysis*
chemical_list: D009556:Niobium; D007854:Lead; D008274:Magnesium