嵌入氧化锌纳米颗粒和α-碘化银纳米晶体的碘钼酸盐玻璃-纳米复合材料中的电导率弛豫

Conductivity relaxation in lodomolybdate glass-nanocomposites embedded with znO nanoparticles and alpha-AgI nanocrystals.

作者信息

Bhattacharya S, Ghosh A

机构信息

Department of Solid State Physics and DST Unit on Nano Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India.

出版信息

J Nanosci Nanotechnol. 2007 Oct;7(10):3684-8. doi: 10.1166/jnn.2007.808.

DOI:10.1166/jnn.2007.808

PMID:18330191

Abstract

We have reported the conductivity relaxation of the 0.70AgI-0.15Ag20-0.15(xZnO-(1-x)MoO3), glass-nanocomposites embedded with ZnO nanoparticles and alpha-Agl nanocrystals. Formation of ZnO nanoparticles and alpha-AgI nanocrystals was confirmed from field emission scanning electron microscopy (FE-SEM) and high-resolution transmission electron microscopy (HR-TEM). It is observed that the conductivity relaxation process depends upon the size of the ZnO nanoparticles embedded in the host glass matrix. The variation of conductivity relaxation time and stretched exponent is correlated with their structure. The scaling of the modulus spectra reveals that the relaxation dynamics of Ag+ ions is independent of temperature but depends on composition.

摘要

我们已经报道了嵌入ZnO纳米颗粒和α-AgI纳米晶体的0.70AgI-0.15Ag20-0.15(xZnO-(1-x)MoO3)玻璃-纳米复合材料的电导率弛豫。通过场发射扫描电子显微镜（FE-SEM）和高分辨率透射电子显微镜（HR-TEM）证实了ZnO纳米颗粒和α-AgI纳米晶体的形成。观察到电导率弛豫过程取决于嵌入主体玻璃基质中的ZnO纳米颗粒的尺寸。电导率弛豫时间和拉伸指数的变化与其结构相关。模量谱的标度表明，Ag+离子的弛豫动力学与温度无关，但取决于组成。