Properties of silver phosphate glass doped with nanosize zinc oxide
Properties of silver phosphate glass doped with nanosize zinc oxide
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DOI：
10.1016/j.ceramint.2016.03.210
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发表时间：
2016-07
影响因子：
5.2
通讯作者：
B. Choudhary;Sarita Rai;N. B. Singh
中科院分区：
文献类型：
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作者：
B. Choudhary;Sarita Rai;N. B. Singh
当高价阳离子掺杂到磷酸盐玻璃中时，基本上由于玻璃结构网络的变化，通过形成交联键来改变性质。本文采用熔融法制备了Ag_2 O-P_2 O_5玻璃，并在玻璃中分别掺杂了5，10，15和20wt%的纳米ZnO。玻璃化转变温度由DSC技术确定，而结构的调查进行了FTIR光谱技术。X射线衍射研究表明，所有制备的玻璃都是差结晶。SEM研究有一个想法的存在下，纳米ZnO的形态变化。电导率和介电常数作为温度和频率的函数进行测量。Cole-Cole图表明，晶界和弛豫过程影响材料的电学性能。结果发现，在ZnO的存在下，玻璃化转变温度增加，电导率随频率增加。
High valence cations when doped in phosphate glasses, modify the properties, basically due to changes in glass structural network, through formation of cross-linked bonds. In the present paper 5, 10, 15 and 20 wt% nanosize ZnO were doped in Ag2O–P2O5glass prepared by melt-quench method. Glass transition temperatures were determined by DSC technique, whereas structural investigations were carried out by FTIR spectroscopic technique. X-ray diffraction studies showed that all the prepared glasses are poorly crystalline. SEM studies were made to have an idea about morphological changes in the presence of nanosize ZnO. Electrical conductivities and dielectric constants were measured as a function of temperature and frequency. Cole–Cole plot indicated that grain boundary and relaxation processes affected the electrical properties. It was found that glass transition temperatures increased in the presence of ZnO and conductivities increased with frequency.