Dielectric behaviour and a.c. conductivity in CuxFe3−xO4 ferrite

Dielectric behaviour and a.c. conductivity in CuxFe3−xO4 ferrite

The dielectric properties (dielectric constant and loss) for the system CuxFe3−xO4 with x = 1.0, 0.8, 0.6, 0.4 and 0.2, were studied in the temperature range 300 ∼ 800 K and also in the frequency range 1 kHz ∼ 1 MHz. A.c. conductivity was derived from dielectric constant and loss tangent data. The c...

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Veröffentlicht in:Bulletin of materials science 2000-10, Vol.23 (5), p.447-452
Hauptverfasser: Patil, A. N, Patil, M. G, Patankar, K. K, Mathe, V. L, Mahajan, R. P, Patil, S. A
Format: Artikel
Sprache:eng
Schlagworte:
Dielectric properties
Dielectric relaxation
Frequency ranges
Permittivity
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Zusammenfassung:The dielectric properties (dielectric constant and loss) for the system CuxFe3−xO4 with x = 1.0, 0.8, 0.6, 0.4 and 0.2, were studied in the temperature range 300 ∼ 800 K and also in the frequency range 1 kHz ∼ 1 MHz. A.c. conductivity was derived from dielectric constant and loss tangent data. The conduction in this system is interpreted as due to small polaron hopping. The dielectric relaxation was observed for the compositions with tetragonal structure whereas normal behaviour was observed for cubic structure.
ISSN:0250-4707
0973-7669
DOI:10.1007/BF02708397