Average and local structural study of proton conductivity by complementary use of neutron and X-ray

2015 Fiscal Year Final Research Report

• Project/Area Number: 24710100
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Quantum beam science
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: KIYANAGI RYOJI 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 J-PARCセンター, 研究員 (50521770)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 中性子構造解析 / プロトン伝導体

Outline of Final Research Achievements

The purpose of this research is to elucidate the underlying mechanism of the super protonic conduction realized in solid acids. Solid solutions of the solid acids were selected as the target materials in order to precisely understand the relationship between the crystal structure and the super protonic conductivity. The conductivity measurements revealed that the phase transition temperature to the super protonic conductive phase non-linearly varies as the ratio of the solid solutions were changed. Meanwhile, the crystal structure analyses by the neutron diffraction method displayed that the distortion of SeO4 tetrahedrons changes as the ratio of the solid solutions changes. This variation was also non-linear to the ratio of the solid solution, suggesting the direct relationship to the phase transition temperature.

Free Research Field

構造解析