ELECTRICAL AND OPTICAL-ABSORPTION STUDIES OF PVA DOPED WITH COCL2 ANDNICL2

Authors
KHALED MA ELOCKER MM RISK HS ELZAHED H
Citation
Ma. Khaled et al., ELECTRICAL AND OPTICAL-ABSORPTION STUDIES OF PVA DOPED WITH COCL2 ANDNICL2, Journal of materials science. Materials in electronics, 6(6), 1995, pp. 424-426
Citations number
12
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Condensed Matter","Material Science
Journal title
Journal of materials science. Materials in electronics → ACNP
ISSN journal
09574522
Volume
6
Issue
6
Year of publication
1995
Pages
424 - 426
Database
ISI
SICI code
0957-4522(1995)6:6<424:EAOSOP>2.0.ZU;2-L
Abstract
Electrical resistivity and optical absorption of PVA doped with both C oCl2 and NiCl2 have been studied. It was found that the conduction was mainly ionic in nature between 20 and 120 degrees C. The resistivity decreased with an increase in the nickel content, indicating the role of transition metal ions. The compensation law was found to be valid f or the investigated samples. Optical absorption spectra were obtained in the range 4000-50 000 cm(-1) and analysed in terms of d-d transitio ns. It is concluded that nickel is in the divalent state and is ionica lly co-ordinated. Moreover, nickel is acted upon by an octahedral symm etrical field.