Synthesis and characterization of ZnO:Co2+ nanoparticles

被引：43

作者：

Volbers, N. ^{[1
]}

Zhou, H. ^{[1
]}

Knies, C. ^{[1
]}

Pfisterer, D. ^{[1
]}

Sann, J. ^{[1
]}

Hofmann, D. M. ^{[1
]}

Meyer, B. K. ^{[1
]}

机构：

[1] Univ Giessen, Inst Phys 1, D-35392 Giessen, Germany

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2007年 / 88卷 / 01期

关键词：

D O I：

10.1007/s00339-007-3960-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work investigates cobalt doped ZnO nanoparticles prepared by using wet chemical methods. The nanoparticles have a typical size of 3-8 nm. The electronic structure as well as the optical and magnetic properties of Co2+ have been characterized. X-ray diffraction spectra of the powder show wurtzite ZnO with no secondary Co phases. In the energy range below the bandgap, the optical absorption spectra show the internal d-d transitions related to Co2+ incorporated on the Zn lattice site in ZnO. Low temperature photoluminescence measurements confirm these results. Based on the analysis of the g-valuesfor bulk ZnO:Co., electron paramagnetic resonance measurements coincide with the simulation of Co-doped ZnO powder. Thus far, no evidence for ferromagnetism has been obtained.

引用

页码：153 / 155

页数：3

共 20 条

[11] Material design for transparent ferromagnets with ZnO-based magnetic semiconductors [J].