Doppler broadening measurements of the electron-positron annihilation radiation in nanocrystalline ZrO2

被引：0

作者：

M. Chakrabarti

D. Bhowmick

A. Sarkar

S. Chattopadhyay

S. Dechoudhury

D. Sanyal

A. Chakrabarti

机构：

[1] University of Calcutta,Department of Physics

[2] Variable Energy Cyclotron Centre,Department of Physics

[3] Bangabasi Morning College,undefined

来源：

Journal of Materials Science | 2005年 / 40卷

关键词：

Ball Mill; Spectroscopic Technique; Typical Defect; Positron Annihilation; Lifetime Measurement;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

ZrO2 powders have been ground by ball mill grinder to achieve the particle size down to 10 nm. Typical defects introduced during ball mill grinding have been studied by positron annihilation lifetime measurement technique and coincidence Doppler broadened positron annihilation radiation spectroscopic technique. Coincidence Doppler broadened positron annihilation spectra for ball mill ground and unground ZrO2 samples have been analyzed by constructing ratio curve with defects free Al single crystal. Results indicate an increase of cation defects in ZrO2 samples due to the reduction of particle size by the ball mill grinding process.

引用

页码：5265 / 5268

页数：3

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