Fig. 2: 51V-NMR for 15R-SrVO2.2N0.6.
From: Strain-induced creation and switching of anion vacancy layers in perovskite oxynitrides
a Field-swept NMR spectrum at 30 K showing peaks from tetrahedral (orange) and octahedral (red) sites. Solid circle indicates the signal from the Cu coil. The orange and red arrows indicate the positions at which 1/T1 was measured. Inset is an enlarged plot, where spectra of SrVO3 and Sr3V2O8 are shown for comparison. b Time after saturation pulse dependence of relaxation of R(t) ≡ [m(∞) – m(t)]/m(∞)], where m represents nuclear magnetization at a time t after a saturation pulse, at the tetrahedral (orange) and octahedral (red) sites. The lines are the fit to extract the time constant. Tetrahedral data with t < 100 ms were not considered due to octahedral-site contribution (see yellow arrow in a).
