Physical and chemical properties of nanostructured CoO-AlO x granular films
Journal
Journal of Physics and Chemistry of Solids
Journal Volume
65
Journal Issue
7
Pages
1333-1336
Date Issued
2004
Author(s)
Abstract
A series of nano CoO-AlO x granular films were prepared by Ar-O 2 reactive rf sputtering and their resistive and magnetoresistive properties were measured for studying the spin-dependent properties. Transmission electron microscopy and X-ray photoelectron spectroscopy are also utilized to investigate the structures and chemical states of these samples. Based on our results, the particles of CoO with radius around 2 nm could be magnetic at room temperature and provide a large tunneling magnetoreststance of -6% through the AlO x barrier. © 2004 Elsevier Ltd. All rights reserved.
Type
journal article