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F.M. Ismail, F. F. Hamad, H. S. Faraj

Electrical Conductivity of Some Copper Manganites

The a.c. conductivity as a function of temperature was measured for ten prepared samples. The measurements were carried out in the temperature range 25–340°C. The sample CuMn₂O₄ prepared either from oxide or carbonate contains the least impurity content, while the sample Cu_1.5Mn_1.5O₄ from oxide origin and Cu_1.6Mn_1.4O₄ from carbonate origin contain the highest impurity content. The activation energy ΔE₁ values for the oxide origin samples are nearly the same of those obtained from carbonate origin. The variation of ΔE₂ values with concentration of copper content (x) appears to be consistent.

Zeitschrift für Physikalische Chemie, Oldenbourg Wissenschaftsverlag

Print ISSN: 0942-9352
Volume: 217, 06/2003
Pages: 667

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