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arXiv · 0906.3163

Fast Diffusion Process in Quenched hcp Dilute Solid $^3$He-$^4$He Mixture

Ye. O. Vekhov·A. P. Birchenko·N. P. Mikhin·E. Ya. Rudavskii
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Abstract

The study of phase structure of dilute $^3$He - $^4$He solid mixture of different quality is performed by spin echo NMR technique. The diffusion coefficient is determined for each coexistent phase. Two diffusion processes are observed in rapidly quenched (non-equilibrium) hcp samples: the first process has a diffusion coefficient corresponding to hcp phase, the second one has huge diffusion coefficient corresponding to liquid phase. That is evidence of liquid-like inclusions formation during fast crystal growing. It is established that these inclusions disappear in equilibrium crystals after careful annealing.

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Ye. O. Vekhov, A. P. Birchenko, N. P. Mikhin, E. Ya. Rudavskii. 2009-06-17. Fast Diffusion Process in Quenched hcp Dilute Solid $^3$He-$^4$He Mixture. https://doi.org/10.1007/s10909-009-0022-9

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