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Low Frequency Impedance Study of Li2B4O7 Single Crystals

For the study on the electrical characteristics in the electrode effect in lithium tetraborate (Li 2 B 4 O 7 ) single crystal, temperature dependence of dielectric constant and complex impedance in the low frequency (0.1 Hz–10 MHz) along the [001] axis was reported. Strong low frequency dispersion was observed in the complex dielectric constant scheme. Warburg type diffusion process was found in impedance study in the low frequency region, which maybe resulted from enhancement of chemical potential by activation of charge carriers in the deep potential well in the electrode region.