Measurements showing that the electrical properties of Ge17 Te83 are drastically changed when it is doped with silver are reported. The pure material acts as a linear element whose a.c. impedance and phase angle were found to be invariant over a wide frequency range 10−3 to 105 Hz. On doping with silver, the sample displayed considerably higher values of a.c. impedance, capacitance and d.c. resistance than those shown by the pure material. The silver-doped system also showed non-linearI–V characteristics and a voltage-dependent capacitance. The change in electrical properties is explained using the dipolar model proposed. It is also shown that correlated barrier hopping model is applicable to the silver-doped chalcogenide and that the dipolar model is consistent with this model.
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Khurana, P., Vohra, A. & Srivastava, K.K. Silver-doping effects on electrical properties of Ge-Te alloy. J Mater Sci: Mater Electron 1, 175–181 (1990). https://doi.org/10.1007/BF00696072
- Electrical Property
- Electronic Material
- Phase Angle
- Versus Characteristic
- Pure Material