Defect studies in annealed ZnO by positron annihilation spectroscopy

被引：31

作者：

Sanyal, D. ^{[1
]}

Roy, Tapatee Kundu ^{[1
]}

Chakrabarti, Mahuya ^{[1
]}

Dechoudhury, Siddhartha ^{[1
]}

Bhowmick, Debasis ^{[1
]}

Chakrabarti, Alok ^{[1
]}

机构：

[1] Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2008年 / 20卷 / 04期

关键词：

D O I：

10.1088/0953-8984/20/04/045217

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Coincidence Doppler broadening of the positron annihilation technique has been employed to identify the defects in thermally annealed 'as-received' ZnO and thermally annealed ball-milled nanocrystalline ZnO. Results indicate that a significant amount of oxygen vacancy has been created in ZnO due to annealing at about 500 degrees C and above. The results also indicate that the Zn vacancy created during the ball milling process can be easily removed by annealing the sample at about 500 degrees C and above. The defect characterization has also been correlated with the magnetic properties of ZnO.

引用

页数：4

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