Investigation of Impact of Antimony (Sb) Nanoparticles Incorporation on Structural, Dielectric, and Electrical Properties of Se76-xGe14As10Sbx (x = 0, 3, 6, 9, and 12) Glasses

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-10-06 DOI:10.1016/j.jallcom.2025.184259

Vijay Pratap, Surya Pratap, Devanand Gupta, Horesh Kumar

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引用次数: 0

Abstract

Chalcogenide glasses of composition Se_76-xGe₁₄As₁₀Sb_x (x = 0, 3, 6, 9, and 12%) were prepared, using Sb nanoparticles, by traditional melt quenching procedure. Structural analysis reveals Sb forms bonds with Se at lower atm.%, however, at higher atm.%, other heteropolar bonds also formed. Their dielectric properties and a.c. conductivity were studied in 20.20 – 1010.10 kHz and 300 – 345 K, respectively. A temperature and frequency dependence of the dielectric constant was observed, indicating orientation polarization in the system. Dielectric constant increases with incorporation of Sb nanoparticles. However, a slight decrease is noticed for x = 12. The variations in dielectric loss with temperature and frequency were explained by polaron hopping of charge carriers and conduction loss, as per the Elliot and Shimakawa hypothesis. The a.c. conductivity was found to be ~ 10^-4 (Ω-m)^-1 for prepared alloys. The conduction mechanism shows a change from Correlated Barrier Hopping (CBH) to the Non-Overlapping Polaron Tunneling (NSPT) at a particular temperature for all the alloys.

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锑（Sb）纳米颗粒掺入对Se76-xGe14As10Sbx （x = 0,3,6,9和12）玻璃结构、介电和电学性能影响的研究

采用传统的熔体淬火工艺制备了成分为Se76-xGe14As10Sbx （x = 0、3、6、9和12%）的硫系玻璃。结构分析表明Sb与Se在较低的atm下形成键。%，然而，在更高的atm。%，其他的异极性键也形成了。分别在20.20 ~ 1010.10 kHz和300 ~ 345 K范围内研究了它们的介电性能和交流电导率。观察到介电常数与温度和频率的关系，表明系统中存在取向极化。随着Sb纳米颗粒的掺入，介电常数增加。然而，当x = 12时，可以注意到轻微的减少。根据Elliot和Shimakawa的假设，介质损耗随温度和频率的变化可以用载流子的极化子跳变和传导损耗来解释。所制备合金的交流电导率为~ 10-4 （Ω-m）-1。在特定温度下，所有合金的传导机制都由相关势垒跳变到非重叠极化子隧穿。

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.