Table of Contents
Journal of Nanoparticles
Volume 2013 (2013), Article ID 405043, 6 pages
http://dx.doi.org/10.1155/2013/405043
Research Article

The Influences of CuO/ZnO Ratios on the Crystallization Characteristics Electrical and Magnetic Properties of Powders

1The Instrument Center, National Cheng Kung University, Tainan 70101, Taiwan
2Department of Materials Science and Engineering, Institute of Nanotechnology and Microsystems Engineering, Center for Micro/Nano Science and Engineering, National Cheng Kung University, Tainan 70101, Taiwan
3Institute of Microelectronics and Department of Electrical Engineering, Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, Taiwan

Received 18 October 2012; Accepted 18 January 2013

Academic Editor: Yang Xu

Copyright © 2013 Kuan-Jen Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This study synthesizes powders using an aqueous solution method. The powders with different content ratios of CuO and ZnO (CuO : ZnO = 1 : 2, 1 : 1, and 2 : 1) were formed. The crystalline characteristics and electrical and magnetic properties depended primarily on the mixing effect and oxygenation. The electrical resistance of C0.5Z0.5O ( ) powder was lower than that of CuO ( ) powder after ZnO mixing in CuO. This reduction was attributed to the substitution of Cu+ ions at Zn2+ sites or the formation of electron trapping defect centers. The concentration ratio of Cu2O phase in powder mainly dominated the electrical resistance. The has a diluted ferromagnetism (DFM) and paramagnetism (PM). The electrical resistance of decreased; the magnetic behavior increased instead. This study also analyzes the chemical binding of Cu0.5Zn0.5O powders to confirm the contribution of Cu+ ions to the electrical and magnetic properties.