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![]() | Ailion, David Charles | Nature of the incommensurate-paraelectric transition: a two dimensional exchange-difference NMR study | 87Rb two-dimensional exchange-difference NMR was used to study collective motions in the incommensurate (I) and paraelectric (P) phases of Rb2ZnCl4, which elucidate the nature of the I-P transition. We measured the cross-peak frequency displacement vs mixing time and observed a gradual increase towa... | Incommensurate systems; NMR; Paraelectric phase | 2000 |