S 81 State of hydrogen in cubic zirconium dihydride / R. N. Pletnev, A. Ya. Kupryazhkin, A. V. Dmitriev, E. V. Zabolotskaya // Journal of Structural Chemistry. - 2002. - Vol. 43, № 3. - P445-448 : il. - Bibliogr. : p. 448 (15 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ДИГИДРИД ЦИРКОНИЯ -- ВОДОРОД -- ПАРАМАГНИТНЫЙ РЕЗОНАНС Аннотация: PMR spectra have been recorded and the proton spin–lattice relaxation time has been measured for cubic hydride δ-ZrH2. It is found that above 290 K thermally activated diffusion of hydrogen takes place. In the region 230 K, a reversible phase transition takes place, which is due to a change in the state of hydrogen in the crystal lattice of zirconium dihydride. Possible mechanisms of this transition are discussed Полный текст |