Details

Autor(en) / Beteiligte

• Nakamura, M.
• Iwase, H.
• Arai, M.
• Kartini, E.
• Russina, M.
• Yokoo, T.
• Taylor, J.W.

Titel

Low energy vibrational excitations characteristic of superionic glass

Ist Teil von

• Physica. B, Condensed matter, 2006-11, Vol.385, p.552-554

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2006

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The mechanism of high ionic conductivity in superionic glass constitutes an unsolved problem in the field of science. Here we performed inelastic neutron scattering measurements of superionic glass system ( AgI ) x ( Ag 2 S ) x ( AgPO 3 ) 1 - 2 x by using MARI spectrometer at ISIS, and found that the Q -dependence of inelastic intensity in the energy region from 1 to 3 meV of superionic phase glass shows an excess intensity above Q = 1.8 Å - 1 compared with insulator phase. Similar phenomena were also observed in another superionic glass ( AgI ) 0.5 ( AgPO 3 ) 0.5 by using NEAT spectrometer at HMI with high resolution measurement. These results clearly suggest peculiar low energy vibrational excitations should be universal features of superionic glass.