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Disappearance of ?AgI in (AgI)0.7?(NaPO3)0.3 composite at room temperature

PURWANTO, A and Kartini, Evvy and Kamiyama, T and Hoshikawa, A and Harjo, S and Collins, MF and Purnama, Safei (2004) Disappearance of ?AgI in (AgI)0.7?(NaPO3)0.3 composite at room temperature. Solid State Ionics, 171 (1-2). pp. 113-119. ISSN 01672738

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Abstract

We report crystalline phases in the melt-quenched (AgI)0.8–(NaPO3)0.2 and (AgI)0.7–(NaPO3)0.3 superionic composites at room temperature as studied by VEGA powder neutron diffraction of KEK. (AgI)0.8–(NaPO3)0.2 contains γAgI and βAgI with a 70:30 ratio, which is similar to that found in pure AgI. On the other hand, (AgI)0.7–(NaPO3)0.3 contains AgI and Ag5IP2O7 with a 53:47 ratio, without any indication of βAgI presence. Due to the overall broad line widths and the hexagonal-related orthorhombic unit cell of Ag5IP2O7, VEGA was indispensable to probe its existence in (AgI)0.7–(NaPO3)0.3 at room temperature. The disappearance of βAgI in (AgI)0.7–(NaPO3)0.3 in favour of Ag5IP2O7 containing more oxygens indicating that the phosphate chains have been oxidized to P2O7 pairs of phosphate tetrahedra.

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 11:32
Last Modified: 01 Dec 2018 11:32
URI: http://repo-nkm.batan.go.id/id/eprint/7047

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