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Ferromagnetic study of ZnO based heterojunctions


EMSL Project ID
30421

Abstract

The search for spintronics materials that combine semiconducting and ferromagnetic properties, dilute magnetic semiconductors (DMS), is presently one of the most relevant fields in magnetism. Currently, ZnO based DMS have been studied due to the potential application of spintronics devices, which exploit the fabrication of spin-dependent devices with new or enhanced functionality, such as polarized solid-state light sources, novel microprocessors and sensitive biological and chemical sensors. We propose to study the magnetic properties of electrodeposited transition-metal-doped zinc oxide (ZnO) nanowires based heterojunctions using vibrating sample magnetometer (VSM). We will use VSM to study the ferromagnetic behavior of magnetic impurities doped ZnO/polymer and ZnO/metal based heterojunctions and x-ray photoelectron spectroscopy (XPS) to find out lattice location or chemical state should be applied in order to give more insight into possible mechanisms for ferromagnetism.

Project Details

Project type
Large-Scale EMSL Research
Start Date
2008-08-22
End Date
2009-08-23
Status
Closed

Team

Principal Investigator

Nadarajah Athavan
Institution
Portland State University

Team Members

Rolf Konenkamp
Institution
Portland State University

Related Publications

Athavan N, and R Konenkamp. 2011. "Dilute Magnetic Semiconductors from Electrodeposited ZnO Nanowires." Physica Status Solidi B, Basic Research 248(2):334-338. doi:10.1002/pssb.201046349