Bibliographic Details
| Title: |
Superionic–protonic behavior of a new mixed sodium dihydrogen phosphate–arsenate at room temperature |
| Authors: |
Jarraya, Khaled1 khaledjarraya@yahoo.fr, Ennaceur, Nasreddine1,2, El Marssi, Mimoun2, Mhiri, Tahar1 |
| Source: |
Physica B. Apr2011, Vol. 406 Issue 8, p1546-1549. 4p. |
| Subjects: |
Mixtures, Phase transitions, Electric conductivity, Relaxation phenomena, Spectrum analysis, Transport theory, Sodium compounds |
| Abstract: |
Abstract: The elaborate mixed material of the formula NaH2(PO4)0.48(AsO4)0.52·H2O denoted by NDAP belongs to a group of compounds having properties that are intermediate between those of a normal salt and an acid, and undergoes a transition from a paraelectric to a superprotonic phase transition at room temperature. The temperature phase transition (296K) leading to a superionic–protonic phase characterized by an unusual high conductivity at room temperature was found. The conductivity relaxation parameters associated with the high-disorder protonic conduction have been determined from the analysis of the M″/M″ max spectrum and measured in a wide temperature range. Transport properties in this material appear to be due to proton hopping mechanism. [Copyright &y& Elsevier] |
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| Database: |
Engineering Source |
