Abstract

In this work, the influence of transition-metal ions doping on the zinc phosphate glass has been investigated. To do so, a series of glass doped with Ni²⁺, Cu²⁺and Co²⁺ at different ratio (1, 2 and 5 mol %) was synthesized. The Fourier transform infrared spectra was used to elucidate the bonding system of the constituent atoms. The dielectric and conductivity properties were studied by impedance spectroscopy over a frequency range from 10^–2 Hz to 1 MHz at different temperatures. The changes in the conductivity and activation energy dependon the chemical composition and indicate a changeover of the predominant conduction mechanism from ionic to polaronic. The results have shown a lower electrical conductivity for glass containing CuO. This is related to the lower depolymerization degree of the glass network by Cu²⁺ ions. The dielectric constant and dielectric loss increased with the temperature and decreased with the frequency for all glasses studied. The variation of the value s factor for all glass samples as the function of temperature agrees with the correlated barrier-hopping (CBH) model.

中文翻译：

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过渡金属离子（Ni 2+，Cu 2+和Co 2+）对磷酸锌锌电和介电性能的影响

摘要

在这项工作中，已经研究了过渡金属离子掺杂对磷酸锌玻璃的影响。为此，合成了一系列以不同比例（1、2和5摩尔％）掺杂有Ni 2 ⁺，Cu ²⁺和Co ²⁺的玻璃。傅里叶变换红外光谱用于阐明组成原子的键合系统。通过阻抗谱在10 ^–2的频率范围内研究了介电和电导特性Hz在不同温度下为1 MHz。电导率和活化能的变化取决于化学成分，并表明主要的传导机理已从离子性转变为极化性。结果表明，含CuO的玻璃的电导率较低。这与通过Cu ²⁺离子降低玻璃网络的解聚度有关。对于所有研究的玻璃，介电常数和介电损耗随温度升高而降低。所有玻璃样品的值s因子随温度的变化与相关的势垒跳跃（CBH）模型一致。