Size-Controlled Growth of High-Density Ordered Nanomagnet Arrays by Template-Assisted Method

作者:Zeng, Zhiqiang*; Zhou, Qingwei; Yang, Zhen; Miao, Qing; Gao, Xingsen; Zhou, Guofu; Zhang, Zhang
来源:Journal of Nanoscience and Nanotechnology, 2016, 16(12): 12231-12236.
DOI:10.1166/jnn.2016.12975

摘要

Our research work focused on high-density magnetic nanodot arrays using ultra-thin anodic aluminum oxide (AAO) membrane as template. We fabricated the ordered nanomagnetic arrays by high-vacuum thermal evaporation with help from the AAO membrane bonded onto desired substrates. The typical sizes of the nanomagnetic materials were highly controlled at 20 nm and 80 nm ranges by adopting different pore-sizes of AAO. The packing-density was achieved to as high as 6 x 16x10(10) cm(-2), while the morphology was investigated by scanning electron microscope (SEM) and atomic force microscopy (AFM), which confirmed the size-controlled growth and uniformity of size distribution. The nanomagnetic characteristics were investigated by magnetic force microscopy (MFM) and Physical Property Measurement System (PPMS) in which the size-related nanomagnetic effect was confirmed.