SENSITIVITY OF IONIC THERMOCURRENT SPECTRA TO THE PRESENCE OF DIVALENT NICKEL IN ANNEALED NACL-CRYSTALS

Citation
B. Macalik et M. Suszynska, SENSITIVITY OF IONIC THERMOCURRENT SPECTRA TO THE PRESENCE OF DIVALENT NICKEL IN ANNEALED NACL-CRYSTALS, Materials chemistry and physics, 43(1), 1996, pp. 62-65
Citations number
17
Categorie Soggetti
Material Science
ISSN journal
02540584
Volume
43
Issue
1
Year of publication
1996
Pages
62 - 65
Database
ISI
SICI code
0254-0584(1996)43:1<62:SOITST>2.0.ZU;2-D
Abstract
Ionic thermocurrent measurements were performed for solution-treated N aCl:Ni crystals additionally annealed in a wide temperature range. It has been shown that the decay of the impurity-vacancy (IV) dipoles at temperatures in the range 333 K less than or equal to T-an less than o r equal to 463 K is accompanied by the formation of some vacancy-rich clusters which are of metastable character. These clusters transform i nto the nuclei of the stable NiCl2 phase. The decay of IV dipoles has been described in terms of an Avrami approach for precipitation of the dopant within stress fields of dislocations.