水によるゾルーゲルガラスの高機能化(第56回日本セラミック協会学術賞受賞研究総説)

概要

論文の詳細を見る
The sol-gel technique is widely used to prepare new functional glasses with new compositions. A large amount of water, however, contained in the glasses sometimes acts in harmful ways to properties. Glasses beneficially utilizing water, if developed, would greates enlarge the application of conventional sol-gel-derived glasses. This review reports on the preparation of new glasses exhibiting high proton conductivities and persistent spectral hole-burning, in which activates water important effects. The electrical conduction in the sol-gel-derived glasses containing water was related to the dissociation of proton from the hydroxyl bonds and proton hopping through water molecules. The conductivity was found to be proportional to the logarithm of water concen tration. The spectral hole was burned by the rearrangement of the hydroxyl bonds surrounding the rare-earth ions, and the depth increased as the fraction of hydroxyl bonds increased.
社団法人日本セラミックス協会の論文
2002-09-01