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

页码：4758 / 4764

页数：7

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