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Creator | Title | Description | Subject | Date |
1 |
 | Ailion, David Charles | 93Nb NMR in the imcommensurate and quasi-commensurate phases of barium sodium niobate | NMR spectra have been measured for the quadrupole perturbed 1/2 -1/2 transition of 9 3Nb in barium sodium niobate (BSN) between 300 and 650 K. The spectra are inhomogeneously broadened in the incommensurate (/) phase between T7 = 580 K and r c = 540 K as well as in the quasicommensurate (QC) phase ... | NMR; Spectra; Barium sodium niobate; Line shapes | 1994 |
2 |
 | Ailion, David Charles | NMR in substitutionally disordered incommensurate (Rb1-xKx)2ZnCl4 | The impurity-concentration dependence of the 8 7Rb NMR line shapes and phason-induced spin-lattice relaxation rates has been studied over a wide temperature range in substitutional^ disordered incommensurate (Rb1_xKJ C)2ZnCl4 for x =0.00, 0.02, and 0.06. The results yield information on the impurity... | NMR; Line shapes; Phasons; Spin-lattice; Phase fluctuations | 1994 |
3 |
 | Ailion, David Charles | Thermal fluctuations and NMR spectra of incommensurate insulators | The effects of thermal order-parameter fluctuations on the NMR line shape of incommensurate systems are evaluated within the mean-field Landau theory and the results are compared with the 8 7Rb and 3 9K 1/2 -1/2 NMR spectra of Rb2ZnCl4 and K2Se04 just below the paraelectric-incommensurate transition... | NMR spectra; Thermal fluctuations; Line shapes; Incommensurate insulators | 1994 |