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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Proton nuclear magnetic resonance (NMR) spectra and spin-lattice relaxation rates for the solid solution alpha-MnH(0.06) have been measured over the temperature range 11-297 K and the resonance frequency range 20-90 MHz. A considerable shift and broadening of the proton NMR line and a sharp peak of the spin-lattice relaxation rate are observed near 130 K. These effects are attributed to the onset of anti ferromagnetic ordering below the Neel temperature T(N) 130 K. The proton NMR line does not disappear in the antiferromagnetic phase; this suggests a small magnitude of the local magnetic fields at H-sites in alpha-MnH(0.06). The spin-lattice relaxation rate in the paramagnetic phase is dominated by the effects of spin fluctuations.