V 76 Vitrification of liquid inclusions in hcp 3He-4He crystal: The role of an intermediate bcc phase [Electronic resource] / N. P. Mikhin, A. P. Birchenko, A. P. Neoneta, E. Y. Rudavskii, V. G. Baidakov // Journal of Low Temperature Physics. - 2014. - Vol.175, № 1-2. - 154-159. . - Bibliogr. : p. 159 (11 ref.) Рубрики: ФИЗИКА Кл.слова (ненормированные): NMR -- RELAXATION TIMES -- SOLID HELIUM Аннотация: The phase structure of the rapidly quenched solid helium samples is studied by the NMR technique in dilute 3He-4He mixtures at 1.35-1.8 K. The pulse NMR method is used to measure the spin-lattice and spin-spin relaxation times for all coexisting phases. An additional spin-lattice relaxation process is found just before vitrification of the liquid inclusions in hcp matrix. The relaxation rate of the new process coincides with that of bcc solid. It has been found that the new relaxation process is observed only in the temperature region of the phase diagram where an equilibrium bcc phase exists. After the liquid inclusions vitrification has been completed, the contribution from the bcc phase is not detected. The spin-lattice relaxation times in all of coexisting phases are discussed \\\\expert2\\nbo\\Journal of Low Temperature Physics\\2014, v.175, p. 154-159.pdf |