Magnetic Studies of Co-Doped ZnO Nanoparticles

被引：0

作者：

Bandyopadhyay, S. K. ^{[1
]}

Singh, N. Surajkumar ^{[2
]}

Himanshu, A. K. ^{[1
]}

Chakraborty, Keka R. ^{[3
]}

Das, D. ^{[4
]}

Mukhopadhyay, P. K. ^{[5
]}

Mondal, Nagendra ^{[1
]}

机构：

[1] Ctr Variable Energy Cyclotron, 1 AF Bidhan Nagar, Kolkata 700064, India

[2] Manipur Univ, Dept Phys, Imphal 795003, Manipur, India

[3] Bhabha Atom Res Ctr, Solid State Phys Div, Bombay 400085, Maharashtra, India

[4] UGC, DAE Consortium Basic Sci, Kolkata 700098, India

[5] SN Bose Ctr Basic Sci, Kolkata, India

来源：

SOLID STATE PHYSICS: PROCEEDINGS OF THE 55TH DAE SOLID STATE PHYSICS SYMPOSIUM 2010, PTS A AND B | 2011年 / 1349卷

关键词：

Co-doped ZnO; Nanoparticles; Magnetisation; Antiferromagnetic coupling;

D O I：

10.1063/1.3605823

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

ZnO doped with Co has been synthesised at various concentrations from 1 to 20 atom % in bulk polycrystalline form by wet chemical method. Particle size was ranging from 40-50nm. There was a signature of ferromagnetism at 7 atom % and higher with S-type curves in M-H plots. Remanent magnetization was quite appreciable. But, there is anomaly with decrease in moment at higher atomic concentrations. No sign of superparamagnetism due to nanoparticles was there. Magnetism is thought to be due to interaction between nearest neighbor Co(II) ions along with clusters of Co(II) in isolation, which may be due to precipitation.

引用

页码：239 / +

页数：2

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