This title appears in the Scientific Report :
2005
Please use the identifier:
http://hdl.handle.net/2128/1173 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevB.72.174301 in citations.
Neutron and nuclear inelastic scattering study of the Einstein oscillators in Ba, Sr, and Eu-filled germanium clathrates
Neutron and nuclear inelastic scattering study of the Einstein oscillators in Ba, Sr, and Eu-filled germanium clathrates
Inelastic neutron scattering measurements on Ba8Ga16Ge30 and Sr8Ga16Ge30 indicate the presence of soft local modes with Einstein oscillator energies of 4.9 +/- 0.1 and 4.4 +/- 0.1 meV, modes which are associated with the lowest "rattling" mode of the Ba(B) and Sr(B) guests, respectively. N...
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Personal Name(s): | Hermann, M. A. |
---|---|
Schweika, W. / Leupold, O. / Rüffer, R. / Nolas, G. S. / Grandjean, F. / Long, G. J. | |
Contributing Institute: |
Streumethoden; IFF-ISM |
Published in: | Physical Review B Physical review / B, 72 72 (2005 2005) 17 17, S. 174301 174301 |
Imprint: |
College Park, Md.
APS
2005
|
Physical Description: |
174301 |
DOI: |
10.1103/PhysRevB.72.174301 |
Document Type: |
Journal Article |
Research Program: |
Betrieb und Weiterentwicklung der Neutronenquelle FRJ- 2 |
Series Title: |
Physical Review B
72 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevB.72.174301 in citations.
Inelastic neutron scattering measurements on Ba8Ga16Ge30 and Sr8Ga16Ge30 indicate the presence of soft local modes with Einstein oscillator energies of 4.9 +/- 0.1 and 4.4 +/- 0.1 meV, modes which are associated with the lowest "rattling" mode of the Ba(B) and Sr(B) guests, respectively. Nuclear inelastic scattering measurements on Eu8Ga16Ge30 yield Einstein oscillator energies of between 3.0 +/- 0.3 and 7.5 +/- 1.2 meV for the different modes of the Eu guests. Further, the resonant character of the measurements on Eu8Ga16Ge30 reveals, without question, that neither of the Eu guests exhibit any vibrational modes above 9 meV. |