| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1295417 | Solid State Ionics | 2006 | 4 Pages |
Abstract
GaPO4 crystals were grown from solutions of aqueous phosphoric acid. A critical factor influencing the high-temperature behaviour of the material is its content of âOH groups, which was determined by FT-IR spectroscopy. From an Arrhenius plot of the electrical conductivity of platinum electroded crystals, a single activation energy of 1.68 ± 0.07 eV to temperatures of about 950 °C was derived irrespective of the source of the crystals. A conduction model based on proton migration via a hydrogen bridge bond between an OH group and an adjacent oxygen ion is proposed.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
P. Hofmann, K. Jacobs, H. Federmann, M. Schulz, H. Fritze, H.L. Tuller,