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Structure and dynamics on superionic conducting phosphate glasses by neutron scattering

Kartini, E. and Arai, M. and Mezei, F. and Nakamura, M. and Russina, M. (2006) Structure and dynamics on superionic conducting phosphate glasses by neutron scattering. Physica B: Condensed Matter, 385-38. pp. 236-239. ISSN 09214526

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Abstract

Neutron diffraction and inelastic scattering experiments have been performed on superionic conducting phosphate glasses, AgI–AgPO3 and its undoped glass AgPO3. In general, the static, elastic and dynamic structure factors S(Q), S(Q, ω=0), S(Q, ω), respectively, exhibit a prepeak at very low Q∼0.7 Å−1 related to the intermediate range order ∼10 Å, but not for the AgPO3. The low-energy excitation, or Boson peak (BP), at around 2–3 meV appears in all undoped and doped glasses.The amplitude of the BP increases and the position shifts to lower energy with addition of AgI. The inelastic contribution can be expressed in terms of sound waves, ΔS(Q,ω) α Q2 S(Q), which is consistent with an acoustic mode. The expansion of the phosphate network plays a dominant role on increasing the mobility of the Ag ions, the ionic conductivity, the prepeak and the BP intensities.

Item Type: Article
Subjects: Daur Bahan Bakar Nuklir dan Bahan Maju > Bahan Struktur dan Bahan Maju > Teknik Sintesis Bahan Maju
Divisions: Pusat Sains dan Teknologi Bahan Maju
Depositing User: EDITOR PSTBM BATAN
Date Deposited: 01 Dec 2018 11:31
Last Modified: 01 Dec 2018 11:31
URI: http://repo-nkm.batan.go.id/id/eprint/7032

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