ISSN:
1573-482X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The temperature dependence of the d.c. conductivity, dielectric constant and thermally stimulated depolarization current (TSDC) have been investigated for press-prepared metal-ligand complex samples. The electrical conductivity results are explained by assuming that both ionic and electronic conduction mechanism coexist with different contributions over the whole temperature range of experiments. The dielectric constant ɛ′ shows a sharp peak at a particular transition temperature in all samples. The effect of annealing on dielectric constant of nickel complex sample induces a remarkable reduction in its magnitude. The TSDC spectra have been found to be characterized by two pronounced peaks in cobalt complex and a broad peak for the other complexes. For aged cobalt complex sample, one sees clearly that the longer the ageing time, the smaller the polarization.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00179226
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