Neutron spectroscopy of magnesium dihydride

A. I. Kolesnikov; V. E. Antonov; V. S. Efimchenko; G. Granroth; S. N. Klyamkin; A. V. Levchenko; M. K. Sakharov; Y. Ren

doi:10.1016/j.jallcom.2010.10.156

Neutron spectroscopy of magnesium dihydride

A. I. Kolesnikov, V. E. Antonov, V. S. Efimchenko, G. Granroth, S. N. Klyamkin, A. V. Levchenko, M. K. Sakharov, Y. Ren

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14 Scopus citations

Abstract

Inelastic neutron scattering spectra of α-MgH₂ powder have been measured at T = 7 K with an energy resolution better than 1.5% using the time-of-flight direct geometry spectrometer SEQUOIA. Based on these spectra, the density g(E) of phonon states in α-MgH₂ has been experimentally constructed for the first time. Comparing the available experimental data on the heat capacity of α-MgH₂ with those calculated using the obtained g(E) confirmed the good accuracy of its determination.

Original language	English
Pages (from-to)	S599-S603
Journal	Journal of Alloys and Compounds
Volume	509
Issue number	SUPPL. 2
DOIs	https://doi.org/10.1016/j.jallcom.2010.10.156
State	Published - Sep 2011

Funding

This work was supported by grant No. 08-02-00846 from RFBR and by the Programme “Thermal Physics and Mechanics of Extreme Energy Effects” of RAS. Work at ORNL was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy; ORNL is managed by UT-Batelle, LLC, under contract DE-AC0500OR22725 for the U.S. Department of Energy. Work at ANL was performed under the auspices of the US DOE-BES under contract DE-AC02-06CH11357. We are thankful to T.E. Sherline for assistance with the INS experiments conducted at the SNS.

Keywords

Inelastic neutron scattering
Metal hydrides

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10.1016/j.jallcom.2010.10.156

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keywords = "Inelastic neutron scattering, Metal hydrides",

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T1 - Neutron spectroscopy of magnesium dihydride

AU - Kolesnikov, A. I.

AU - Antonov, V. E.

AU - Efimchenko, V. S.

AU - Granroth, G.

AU - Klyamkin, S. N.

AU - Levchenko, A. V.

AU - Sakharov, M. K.

AU - Ren, Y.

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AB - Inelastic neutron scattering spectra of α-MgH2 powder have been measured at T = 7 K with an energy resolution better than 1.5% using the time-of-flight direct geometry spectrometer SEQUOIA. Based on these spectra, the density g(E) of phonon states in α-MgH2 has been experimentally constructed for the first time. Comparing the available experimental data on the heat capacity of α-MgH2 with those calculated using the obtained g(E) confirmed the good accuracy of its determination.

KW - Inelastic neutron scattering

KW - Metal hydrides

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JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - SUPPL. 2

ER -

Neutron spectroscopy of magnesium dihydride

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