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W. Warren (1971)
Nuclear Magnetic Resonance and Relaxation in thePhysical Review B
Phase structure of rapidly quenched solid helium samples is studied by the NMR technique on dilute 3He–4He mixtures. The pulse NMR method is used for measurements of spin–spin T 2 relaxation time and spin diffusion coefficient D for all coexisting phases. It was found that quenched samples are two-phase systems consisting of the hcp matrix and some inclusions which are characterized by D and T 2 values close to those in liquid phase. Such liquid-like inclusions undergo a spontaneous transition to a new state with anomalously short T 2 times. It is found that inclusions observed in both the states disappear on careful annealing near the melting curve. It is assumed that the liquid-like inclusions transform into a new state—a glass or a crystal with a large number of dislocations. These disordered inclusions may be responsible for the anomalous phenomena observed in supersolid region.
Journal of Low Temperature Physics – Springer Journals
Published: Jun 7, 2012
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