Dielectric and magnetic properties of (Zn, Co) co-doped SnO2 nanoparticles

doi:10.1088/1674-1056/24/12/127803

中国物理B ›› 2015, Vol. 24 ›› Issue (12): 127803-127803.doi: 10.1088/1674-1056/24/12/127803

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Dielectric and magnetic properties of (Zn, Co) co-doped SnO₂ nanoparticles

Rajwali Khan, 方明虎

Department of Physics, Zhejiang University, Hangzhou 310027, China

收稿日期:2015-04-05 修回日期:2015-09-23 出版日期:2015-12-05 发布日期:2015-12-05
通讯作者: Fang Ming-Hu E-mail:mhfang@zju.edu.cn
基金资助:
Project supported by the National Basic Research Program of China (Grant Nos. 2015CB921004, 2012CB821404, and 2011CBA00103) and the National Natural Science Foundation of China (Grant Nos. 11374261 and 11204059).

Dielectric and magnetic properties of (Zn, Co) co-doped SnO₂ nanoparticles

Rajwali Khan, Fang Ming-Hu (方明虎)

Department of Physics, Zhejiang University, Hangzhou 310027, China

Received:2015-04-05 Revised:2015-09-23 Online:2015-12-05 Published:2015-12-05
Contact: Fang Ming-Hu E-mail:mhfang@zju.edu.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant Nos. 2015CB921004, 2012CB821404, and 2011CBA00103) and the National Natural Science Foundation of China (Grant Nos. 11374261 and 11204059).

摘要/Abstract

摘要： Polycrystalline samples of (Zn, Co) co-doped SnO₂ nanoparticles were prepared using a co-precipitation method. The influence of (Zn, Co) co-doping on electrical, dielectric, and magnetic properties was studied. All of the (Zn, Co) co-doped SnO₂ powder samples have the same tetragonal structure of SnO₂. A decrease in the dielectric constant was observed with the increase of Co doping concentration. It was found that the dielectric constant and dielectric loss values decrease, while AC electrical conductivity increases with doping concentration and frequency. Magnetization measurements revealed that the Co doping SnO₂ samples exhibits room temperature ferromagnetism. Our results illustrate that (Zn, Co) co-doped SnO₂ nanoparticles have an excellent dielectric, magnetic properties, and high electrical conductivity than those reported previously, indicating that these (Zn, Co) co-doped SnO₂ materials can be used in the field of the ultrahigh dielectric material, high frequency device, and spintronics.

关键词: SnO₂ nanoparticles, dielectric property, magnetic properties of nanoparticles, ferromagnetism at room temperature

Abstract: Polycrystalline samples of (Zn, Co) co-doped SnO₂ nanoparticles were prepared using a co-precipitation method. The influence of (Zn, Co) co-doping on electrical, dielectric, and magnetic properties was studied. All of the (Zn, Co) co-doped SnO₂ powder samples have the same tetragonal structure of SnO₂. A decrease in the dielectric constant was observed with the increase of Co doping concentration. It was found that the dielectric constant and dielectric loss values decrease, while AC electrical conductivity increases with doping concentration and frequency. Magnetization measurements revealed that the Co doping SnO₂ samples exhibits room temperature ferromagnetism. Our results illustrate that (Zn, Co) co-doped SnO₂ nanoparticles have an excellent dielectric, magnetic properties, and high electrical conductivity than those reported previously, indicating that these (Zn, Co) co-doped SnO₂ materials can be used in the field of the ultrahigh dielectric material, high frequency device, and spintronics.

Key words: SnO₂ nanoparticles, dielectric property, magnetic properties of nanoparticles, ferromagnetism at room temperature

中图分类号: (Nanocrystals, nanoparticles, and nanoclusters)

78.67.Bf

75.75.-c (Magnetic properties of nanostructures) 75.50.Gg (Ferrimagnetics)

Rajwali Khan, 方明虎. Dielectric and magnetic properties of (Zn, Co) co-doped SnO₂ nanoparticles[J]. 中国物理B, 2015, 24(12): 127803-127803.

Rajwali Khan, Fang Ming-Hu (方明虎). Dielectric and magnetic properties of (Zn, Co) co-doped SnO₂ nanoparticles[J]. Chin. Phys. B, 2015, 24(12): 127803-127803.

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Dielectric and magnetic properties of (Zn, Co) co-doped SnO₂ nanoparticles

Dielectric and magnetic properties of (Zn, Co) co-doped SnO₂ nanoparticles

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