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1992 | 81 | 6 | 681-686
Article title

Dielectric Behaviour of Potassium Acetylacetonate

Content
Title variants
Languages of publication
EN
Abstracts
EN
The dielectric constant and the dielectric loss of potassium acetylacetonate, K(acac), are measured as a function of both temperature and frequency. A peak value is obtained at the a critical temperature T_{c} = 313 K. X-ray analysis revealed that at T_{c}, K(acac) undergoes phase transition from orthorhombic to triclinic structure. The Cole-Cole diagrams have been used to determine the molecular relaxation time τ. The temperature dependence of τ is expressed by thermally activated process. The impedance spectra in the frequency range from 50 Hz to 500 kHz plotted in the complex plane show semicircles. The conduction mechanism, below T_{c}, is predominantly operating at the surface. Above T_{c}, the conduction is proceeding in the bulk material with contribution from the surface.
Keywords
EN
Year
Volume
81
Issue
6
Pages
681-686
Physical description
Dates
published
1992-06
received
1992-02-18
(unknown)
1992-04-03
References
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv81z611kz
Identifiers
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