Mössbauer study of hydrides and deuterides of iron and cobalt

Авторы: Schneider G., Baier M., Wordel R., Wagner F.E., Antonov V.E., Ponyatovsky E.G., Kopilovskii Yu, Makarov E.
Журнал: Journal of Less-Common Metals
Том: 172
Год издания: 1991
Первая страница: 333
Последняя страница: 342
Аннотация: Hydrides and deuterides of iron and hydrides of cobalt prepared at pressures between 4 and 9 GPa and temperatures near 350-degrees-C were studied by Fe-57 Mossbauer spectroscopy. The d.h.c.p. epsilon-FeH almost-equal-to 1.00 phase was found to have a deuteride analogue with nearly the same Mossbauer parameters. In addition to epsilon-FeH almost-equal-to 1.00 and epsilon-FeD almost-equal-to 1.00, three novel hydride (deuteride) components were observed in the Mossbauer spectra, one of them non-magnetic at 4.2 K. In h.c.p. epsilon-CoH(x) the magnetic hyperfine field decreases by about 6% between x = 0 and x = 0.5. In f.c.c. gamma-CoH(x) it is about 3% higher than in the epsilon-phase. The electron density at the Fe-57 nuclei decreases with increasing hydrogen content without a discontinuity between the epsilon and the gamma-phase.
Добавил в систему: Антонов Владимир Евгеньевич

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