Department of Physics, Universidad de Santiago de Chile and Center for the Development of Nanoscience and Nanotechnology, 9170124 Santiago, Chile.
Nanotechnology. 2016 Aug 26;27(34):345709. doi: 10.1088/0957-4484/27/34/345709. Epub 2016 Jul 25.
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.
通过将原子层沉积（ALD）在多孔氧化铝基体中与随后的热还原过程相结合，制备了高度有序和共形的 Ni 纳米管阵列。为了获得 NiO 管，重复进行了 2000 次 ALD NiCp2/O3 循环。ALD 工艺完成后，样品在氢气气氛下从 NiO 还原为金属 Ni。在平行和垂直于纳米管轴的外加磁场下，在 5-300 K 的温度范围内，使用振动样品磁强计测定了它们的磁性能，如矫顽力和方形度。通过 ALD 合成的 Ni 纳米管为在自旋电子学、数据存储和生物应用中的潜在应用提供了有前途的机会。
