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Fabrication and ferromagnetism of Si-SiGe/MnGe core-shell nanopillars | |
Wang, Liming1,2; Liu, Tao1,2; Wang, Shuguang1,2; Zhong, Zhenyang1,2; Jia, Quanjie3![]() | |
2016 | |
发表期刊 | NANOTECHNOLOGY (IF:3.44[JCR-2016],3.578[5-Year]) |
ISSN | 0957-4484 |
EISSN | 1361-6528 |
卷号 | 27期号:40页码:405705 |
文章类型 | Article |
摘要 | Si-Si0.5Ge0.5/Mn0.08Ge0.92 core-shell nanopillar samples were fabricated on ordered Si nanopillar patterned substrates by molecular beam epitaxy at low temperatures. The magnetic properties of the samples are found to depend heavily on the growth temperature of the MnGe layer. The sample grown at a moderate temperature of 300 degrees C has the highest Curie temperature of 240 K as well as the strongest ferromagnetic signals. On the basis of the microstructural results, the ferromagnetic properties of the samples are believed to come from the intrinsic Mn-doped amorphous or crystalline Ge ferromagnetic phase rather than any intermetallic ferromagnetic compounds of Mn and Ge. After being annealed at a temperature of 500 degrees C, all the samples exhibit the same Curie temperature of 220 K, which is in sharp contrast to the different Curie temperature for the as-grown samples, and the ferromagnetism for the annealed samples comes from Mn5GeSi2 compounds which are formed during the annealing. |
关键词 | MnGe ferromagnetic semiconductor nanopillars microstructures |
DOI | 10.1088/0957-4484/27/40/405705 |
收录类别 | SCI ; ADS |
语种 | 英语 |
WOS记录号 | WOS:000412628500001 |
ADS Bibcode | 2016Nanot..27N5705W |
ADS URL | https://ui.adsabs.harvard.edu/abs/2016Nanot..27N5705W |
ADS引文 | https://ui.adsabs.harvard.edu/abs/2016Nanot..27N5705W/citations |
引用统计 | 正在获取...
被引频次:4 [ADS]
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文献类型 | 期刊论文 |
条目标识符 | https://ir.ihep.ac.cn/handle/311005/260319 |
专题 | 中国科学院高能物理研究所 |
作者单位 | 1.复旦大学应用表面物理国家重点实验室 2.南京大学人工微结构科学与技术协同创新中心 3.中国科学院高能物理研究所 |
推荐引用方式 GB/T 7714 | Wang, Liming,Liu, Tao,Wang, Shuguang,et al. Fabrication and ferromagnetism of Si-SiGe/MnGe core-shell nanopillars[J]. NANOTECHNOLOGY,2016,27(40):405705. |
APA | Wang, Liming.,Liu, Tao.,Wang, Shuguang.,Zhong, Zhenyang.,Jia, Quanjie.,...&贾全杰.(2016).Fabrication and ferromagnetism of Si-SiGe/MnGe core-shell nanopillars.NANOTECHNOLOGY,27(40),405705. |
MLA | Wang, Liming,et al."Fabrication and ferromagnetism of Si-SiGe/MnGe core-shell nanopillars".NANOTECHNOLOGY 27.40(2016):405705. |
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