Acta Materialia
Acta Materialia
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发表时间：
2009
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通讯作者：
Shengqiang Zhou;M. Berndt;D. Bürger;V. Heera;K. Potzger;G. Abrasonis;G. Radnóczi;G. Kovács
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作者：
Shengqiang Zhou;M. Berndt;D. Bürger;V. Heera;K. Potzger;G. Abrasonis;G. Radnóczi;G. Kovács
研究了纳米复合C：Co(15和40at.%Co)薄膜的磁输运特性。薄膜是用离子束共溅射方法在热氧化硅衬底上生长的，温度范围为2 0 0~5 0 0℃。报道了两种主要效应：(1)高达2μΩcm的大反常霍尔效应；(2)负磁电阻效应。与场相关的电阻率和霍尔电阻率曲线与重新标度的磁化强度曲线一致，这一发现与自旋相关输运是一致的。这些发现表明，C：Co纳米复合材料有望成为碳基霍尔传感器和自旋电子学的候选材料
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 °C. Two major effects are reported: (i) a large anomalous Hall effect amounting to 2 μΩ cm, and (ii) a negative magnetoresistance. 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