Sohn Jae Min, Kim Hyungsang, Im Hyunsik, Kim Hyungbae, Lee Juwon, Shon Yoon, Subramaniam N G, Kang Taewon, Kim Deuk Young, Koo Hyun Cheol, Lee Joo-Hyeon, Song Jing Dong, Park Chang-Soo, Kim Eun Kyu
Division of Physics and Semiconductor Science, Dongguk University, Seoul 100-715, Republic of Korea.
Nanotechnology. 2017 Dec 15;28(50):505702. doi: 10.1088/1361-6528/aa9832.
The formation, including the density and height of the InFeP:Ag nanorods doped with noble metal Ag using an ion milling method, was preponderantly determined from transmission electron microscopy and x-ray diffraction analyses. We investigate, in particular, the enhanced ferromagnetism of the well-aligned InFeP:Ag nanorods. Auger electron spectroscopy and x-ray photoelectron spectroscopy measurements were carried out in order to investigate the incorporation of Ag and to verify the local chemical bonding of the InFeP:Ag nanorods. The variation of FWHM for the double-crystal x-ray rocking curve and triple-axis diffraction peaks demonstrates that noble metal Ag is incorporated into the InFeP:Ag nanorods. The noticeable ferromagnetic signature (M-H curve) of the InFeP:Ag nanorods is observed and T persists up to almost 350 K (3.9 × 10 emu g), as determined by temperature-dependence magnetization (M-T curve) measurements. This study suggests that the InFeP:Ag nanorods should be a potential candidate for the application of spintronic devices.
通过离子研磨法制备的掺杂贵金属银的InFeP:Ag纳米棒的形成，包括其密度和高度，主要由透射电子显微镜和X射线衍射分析确定。我们特别研究了排列良好的InFeP:Ag纳米棒增强的铁磁性。为了研究银的掺入并验证InFeP:Ag纳米棒的局部化学键合，进行了俄歇电子能谱和X射线光电子能谱测量。双晶X射线摇摆曲线和三轴衍射峰的半高宽变化表明贵金属银掺入了InFeP:Ag纳米棒中。通过温度依赖性磁化（M-T曲线）测量观察到InFeP:Ag纳米棒明显的铁磁特征（M-H曲线），并且居里温度T持续高达近350 K（3.9×10 emu g）。这项研究表明，InFeP:Ag纳米棒应该是自旋电子器件应用的潜在候选材料。
