Electrical, spectral and thermochromic properties of some hydrazone derivatives

A. A. Salem, Y. M. Issa, M. I. Ayad, M. Elkholy

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The electrical and spectral properties of some ethyl cyanoacetate phenylhydrazone derivatives have been investigated. Results obtained show anomalous metallic-like and semiconducting behaviours corresponding to the low and higher temperature ranges. At high temperatures a positive temperature coefficient of electrical conductivity (dΣ/d T) provides evidence for the semiconducting character, and the linear correlation indicates metallic-like behaviour at a low temperature range. Values of activation energy (δE) were calculated in each case. In addition, the current-voltage dependence of the hydrazone derivatives was investigated. This showed that the compounds under study have ohmic conduction. The correlation between γmax and Σa Hammett constant was also investigated. The hydrazone derivatives are thermolabile and undergo thermochromic behaviour during heating.

Original languageEnglish
Pages (from-to)199-202
Number of pages4
JournalJournal of Materials Science: Materials in Electronics
Issue number4
Publication statusPublished - Aug 1994
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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