Two series of copper ferrites are prepared using the chemical compositional formula Cu 1.0-3y Fe 2.0-2x Mo x + y O 4.0 . They are calcinated at 750 C and sintered at 950C. When x = y = 0.0, the ε ′ of the basic copper ferrite is probably due to electronic exchange interactions of copper and iron ions as Cu 2+ ? Cu 1+ and Fe 3+ ? Fe 2+ . The observed value of dielectric constant (? ′ ) decreases as a function of substituent concentration (x) up to x = 0.20 and for further values of ‘x’ it found to increase. In the case of ‘C’ (x = 0) series ferrites ? ′ decreases with substituent concentration (y) up to x = 0.04, later it found to increase. The dispersion of ac resistivity with frequency is observed indicating their strong dependence on frequency as in the case of dielectric behaviour. These results are explained with different possible mechanisms.
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机译：使用化学组成式Cu 1.0-3y Fe 2.0-2x Mo x + y O 4.0制备两个系列的铜铁氧体。它们在750℃下煅烧并在950℃下烧结。当x = y = 0.0时，碱性铜铁氧体的ε′可能是由于铜和铁离子以Cu 2 + 的电子交换相互作用所致。 Cu 1 + 和Fe 3 + 吗？ Fe 2 + 。观察到的介电常数（Δ'）值随取代基浓度（x）的变化而降低，直至x = 0.20，对于“ x”的其他值，发现其增加。如果是“ C”（x = 0）系列铁氧体？ ′随着取代基浓度（y）的增加而降低，直到x = 0.04，之后才发现增加。观察到交流电阻率随频率的离散，表明它们在电介质行为的情况下对频率的强烈依赖性。用不同的可能机制解释了这些结果。
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