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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Giant dielectric permitivity in aligned silver nanowires grown within (AgI)(AgPO3) glasses
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Giant dielectric permitivity in aligned silver nanowires grown within (AgI)(AgPO3) glasses

机译：（AgI）（AgNO3）玻璃中生长的取向银纳米线中的巨介电常数

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摘要

Silver nanowires of diameters in the range 0.5-3.5 nm have been grown within (AgI)(AgPO3) glasses by subjecting them to an electrodeposition process. Silver nanowires are found to be aligned in the glass containing a high concentration of Ag ions. The electrical resistivity of the composites containing silver nanowires exhibits metallic behavior. The electrical conductivity of the precursor glass shows a frequency variation with an exponent n similar to 2/3. This indicates a three-dimensional motion of silver ions in the glass when an electric field is applied. The aligned nanowire formation is believed to arise due to an increase in the internal electrical field as a consequence of the aligned dipoles formed by Ag and I ions within the glass matrix. Some of the wires are broken and they give rise to a giant dielectric permittivity (as extracted from the high-frequency value) due to Gorkov-Eliashberg and Rice-Bernasconi mechanisms.
机译：通过对其进行电沉积过程，已经在（AgI）（AgPO3）玻璃中生长了直径在0.5-3.5 nm范围内的银纳米线。发现银纳米线在含有高浓度Ag离子的玻璃中排列。包含银纳米线的复合材料的电阻率表现出金属行为。前体玻璃的电导率显示出频率变化，其指数n接近于2/3。这表明在施加电场时玻璃中银离子的三维运动。据信排列的纳米线形成是由于内部电场的增加而引起的，所述内部电场的增加是由玻璃基质内的Ag和I离子形成的排列的偶极子的结果。由于Gorkov-Eliashberg和Rice-Bernasconi机制，一些导线断了，并产生了巨大的介电常数（从高频值中提取）。

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