Temperature-dependent magnetic properties of Ni nanotubes synthesized by atomic layer deposition
Temperature-dependent magnetic properties of Ni nanotubes synthesized by atomic layer deposition
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DOI：
10.1088/0957-4484/27/34/345709
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发表时间：
2016-07
期刊：
影响因子：
3.5
通讯作者：
A. Pereira;J. L. Palma;J. Denardin;J. Escrig
中科院分区：
文献类型：
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作者：
A. Pereira;J. L. Palma;J. Denardin;J. Escrig
通过在多孔氧化铝基质中进行原子层沉积(ALD)和随后的热还原工艺相结合，制备了高度有序和共形的镍纳米管阵列。为了得到NiO管，一次ALD NiCp2/O_3循环重复2000次。经过ALD处理后，样品在氢气气氛下从NiO还原为金属Ni。在垂直和平行于纳米管轴线的磁场作用下，在5-300K的温度范围内，在振动样品磁强计上测量了它们的磁性质，如矫直力和正方形。ALD法制备的镍纳米管在自旋电子学、数据存储和生物应用等领域具有广阔的应用前景。
Highly-ordered and conformal Ni nanotube arrays were prepared by combining atomic layer deposition (ALD) in a porous alumina matrix with a subsequent thermal reduction process. In order to obtain NiO tubes, one ALD NiCp2/O3 cycle was repeated 2000 times. After the ALD process, the sample is reduced from NiO to metallic Ni under hydrogen atmosphere. Their magnetic properties such as coercivity and squareness have been determined in a vibrating sample magnetometer in the temperature range from 5–300 K for applied magnetic fields parallel and perpendicular to the nanotube axis. Ni nanotubes synthesized by ALD provide a promising opportunity for potential applications in spintronics, data storage and bio-applications.