Lattice dynamics of AIH{sub 3} and AID{sub 3} examined by inelastic neutron scattering.
Abstract
Inelastic neutron scattering (INS) spectra of trigonal {alpha}-AlH{sub 3} and {alpha}-AlD{sub 3} have been measured in a wide range (5-150 meV) of energy transfers with a much better statistical accuracy than previously using the inverted-geometry NERA-PR spectrometer at JINR, Dubna. The studied energy interval covers the range of low-frequency lattice vibrations and a broad band of optical H vibrations. By using a direct-geometry HRMECS spectrometer at ANL, Argonne, the AlH{sub 3} hydride was also examined by INS at energy transfers up to 315 meV in the regime of small momentum transfers. This significantly enhanced the contribution from the one-phonon neutron scattering and allowed an observation and accurate examination of one more, high-energy band of optical H vibrations predicted theoretically [C. Wolverton et al., Phys. Rev. B 69, 144109 (2004)]. Combining the obtained experimental data, the entire spectrum of phonon density of states was reconstructed for both {alpha}-AlH{sub 3} and {alpha}-AlD{sub 3}.
- Authors:
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); RAS; INTAS
- OSTI Identifier:
- 952199
- Report Number(s):
- ANL/IPNS/JA-59165
Journal ID: ISSN 1098-0121; TRN: US0902403
- DOE Contract Number:
- DE-AC02-06CH11357
- Resource Type:
- Journal Article
- Resource Relation:
- Journal Name: Phys. Rev. B; Journal Volume: 76; Journal Issue: 2007
- Country of Publication:
- United States
- Language:
- ENGLISH
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCURACY; ANL; DUBNA; ENERGY TRANSFER; HYDRIDES; LATTICE VIBRATIONS; MOMENTUM TRANSFER; NEUTRONS; PHONONS; SCATTERING; SPECTRA; SPECTROMETERS
Citation Formats
Kolesnikov, A. I., Antonov, V. E., Markushkin, Y. E., Natkaniec, I., Sakharov, M. K., Inst. of Solid State Phys., Bochvar All-Russian Scientific Research Inst., and Frank Lab. of Neutron Physics. Lattice dynamics of AIH{sub 3} and AID{sub 3} examined by inelastic neutron scattering.. United States: N. p., 2007.
Web. doi:10.1103/PhysRevB.76.064302.
Kolesnikov, A. I., Antonov, V. E., Markushkin, Y. E., Natkaniec, I., Sakharov, M. K., Inst. of Solid State Phys., Bochvar All-Russian Scientific Research Inst., & Frank Lab. of Neutron Physics. Lattice dynamics of AIH{sub 3} and AID{sub 3} examined by inelastic neutron scattering.. United States. doi:10.1103/PhysRevB.76.064302.
Kolesnikov, A. I., Antonov, V. E., Markushkin, Y. E., Natkaniec, I., Sakharov, M. K., Inst. of Solid State Phys., Bochvar All-Russian Scientific Research Inst., and Frank Lab. of Neutron Physics. Mon .
"Lattice dynamics of AIH{sub 3} and AID{sub 3} examined by inelastic neutron scattering.". United States.
doi:10.1103/PhysRevB.76.064302.
@article{osti_952199,
title = {Lattice dynamics of AIH{sub 3} and AID{sub 3} examined by inelastic neutron scattering.},
author = {Kolesnikov, A. I. and Antonov, V. E. and Markushkin, Y. E. and Natkaniec, I. and Sakharov, M. K. and Inst. of Solid State Phys. and Bochvar All-Russian Scientific Research Inst. and Frank Lab. of Neutron Physics},
abstractNote = {Inelastic neutron scattering (INS) spectra of trigonal {alpha}-AlH{sub 3} and {alpha}-AlD{sub 3} have been measured in a wide range (5-150 meV) of energy transfers with a much better statistical accuracy than previously using the inverted-geometry NERA-PR spectrometer at JINR, Dubna. The studied energy interval covers the range of low-frequency lattice vibrations and a broad band of optical H vibrations. By using a direct-geometry HRMECS spectrometer at ANL, Argonne, the AlH{sub 3} hydride was also examined by INS at energy transfers up to 315 meV in the regime of small momentum transfers. This significantly enhanced the contribution from the one-phonon neutron scattering and allowed an observation and accurate examination of one more, high-energy band of optical H vibrations predicted theoretically [C. Wolverton et al., Phys. Rev. B 69, 144109 (2004)]. Combining the obtained experimental data, the entire spectrum of phonon density of states was reconstructed for both {alpha}-AlH{sub 3} and {alpha}-AlD{sub 3}.},
doi = {10.1103/PhysRevB.76.064302},
journal = {Phys. Rev. B},
number = 2007,
volume = 76,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}
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