Synthesis of morphology-improved single-crystalline iron silicide nanowires with enhanced physical characteristics

Wei Jie Huang, Shu Meng Yang, Tzu Ting Liao, Kuo Chang Lu

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

Single-crystalline iron silicide nanowires were synthesized via an original approach, pre-deposition method (PDM), with significantly improved morphologies and physical characteristics as compared with those fabricated by conventional chemical vapor deposition. In the pre-deposition method, combining rapid thermal annealing (RTA) and chemical vapor deposition (CVD), iron silicide nanowires grew from the heterogeneous nucleation sites on the surface of the thin film without a catalyst or Al2O3 template. The morphology of the nanowires has been considerably improved in terms of alignment and aspect ratio. HRTEM analysis confirms that the nanowires were β-FeSi2 with a crystal direction of [111]. Physical property measurements indicate that compared with CVD β-FeSi2 nanowires, β-FeSi2 nanowires synthesized by the PDM performed better in both the field emission and magnetic properties. Magnetic property measurements show that the coercive field of PDM nanowires increased from 249 Oe to 900 Oe. Field emission studies reveal that the average β value of the CVD β-FeSi2 nanowires was 1060, while that of the PDM nanowires became 1892. Notably, with a furnace, few researchers can successfully synthesize nanowires of β-FeSi2, which is one of the most fascinating silicides for its important applications.

原文English
頁(從 - 到)3270-3275
頁數6
期刊CrystEngComm
23
發行號18
DOIs
出版狀態Published - 2021 5月 14

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 材料科學(全部)
  • 凝聚態物理學

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