2010 Fiscal Year Final Research Report

Study of mechanisms of protonic conduction and phase transition in hydrogen-bonded protonic conductors

Research Project

Project/Area Number	21840007
Research Category	Grant-in-Aid for Research Activity Start-up
Allocation Type	Single-year Grants
Research Field	Condensed matter physics I
Research Institution	Tohoku University
Principal Investigator	KIYANAGI Ryoji Tohoku University, 多元物質科学研究所, 助教 (50521770)
Project Period (FY)	2008 – 2010
Keywords	プロトン伝導体 / 構造解析 / 中性子
Research Abstract	A protonic conductor, which exhibits a high protonic conductivity at high temperature, was investigated from the structural aspects. The conducting proton was observed by means of neutron structure analyses and the migration path has been revealed. The proton migrates via neighboring proton sites showing a two-dimensional characteristic. Furthermore, there found a semistable site between the neighboring proton sites through which the protons are considered to move to the neighboring sites rather than directly jump to the ones.