Spin-dependent transport in nanocomposite C:Co films

被引：9
作者：
Zhou, Shengqiang [1 ]
Berndt, Markus [1 ]
Buerger, Danilo [1 ]
Heera, Viton [1 ]
Potzger, Kay [1 ]
Abrasonis, Gintautas [1 ]
Radnoczi, Gyoergy [2 ]
Kovacs, Gyoergy J. [1 ]
Kolitsch, Andreas [1 ]
Helm, Manfred [1 ]
Fassbender, Juergen [1 ]
Moeller, Wolfhard [1 ]
Schmidt, Heidemarie [1 ]
机构：
[1] Forschungszentrum Dresden Rossendorf, Inst Ionenstrahlphys & Mat Forsch, D-01328 Dresden, Germany
[2] Res Inst Tech Phys & Mat Sci HAS, H-1121 Budapest, Hungary
来源：
ACTA MATERIALIA | 2009年 / 57卷 / 16期
关键词：
Carbon:cobalt nanocomposite; TEM; Magneto-transport; Anomalous hall effect; Magnetic nanoparticles; GIANT MAGNETORESISTANCE; MAGNETIC-PROPERTIES; CARBON;
D O I：
10.1016/j.actamat.2009.06.035
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magneto-transport properties of nanocomposite C:Co (15 and 40 at.% Co) thin films are investigated. The films were grown by ion beam co-sputtering on thermally oxidized silicon substrates in the temperature range from 200 to 500 degrees C. Two major effects are reported: (i) a large anomalous Hall effect amounting to 2 mu Omega cm, and (ii) a negative magneto resistance. Both the field-dependent resistivity and Hall resistivity curves coincide with the rescaled magnetization curves, a finding that is consistent with spin-dependent transport. These findings suggest that C:Co nanocomposites are promising candidates for carbon-based Hall sensors and spintronic devices. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：4758 / 4764
页数：7
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