Structural observation of Li2S–GeS2 superionic glasses

✍ Scribed by Keiji Itoh; Masashi Sonobe; Kazuhiro Mori; Masaaki Sugiyama; Toshiharu Fukunaga

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 144 KB
• Volume: 385-386
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2006.05.261

✦ Synopsis

Time-of-flight neutron diffraction measurements have been performed to investigate the structure of Li 2 S-GeS 2 superionic glasses synthesized by mechanical alloying. The total correlation functions have the positive and the negative peaks, which correspond to Ge-S and Li-S nearest-neighbour correlations, respectively. The coordination number of S atoms around a Ge atom indicates that Ge atom is tetrahedrally coordinated by S atoms and GeS 4 tetrahedra consist of not only bridging S but also non-bridging S. The coordination number of S atoms around a Li atom indicates that mobile Li ions are coordinated by three non-bridging S.