TY - JOUR
T1 - Fabrication and Physical Properties of Single-Crystalline Βeta-FeSi2 Nanowires
AU - Yang, Chih Yung
AU - Yang, Shu Meng
AU - Chen, Yu Yang
AU - Lu, Kuo Chang
N1 - Funding Information:
We thank the reviewers for their helpful comments and the Instrument Center of National Cheng Kung University for technical support.
Funding Information:
This work was supported by the Ministry of Science and Technology of Taiwan through Grant MOST 105-2628-E-006-002-MY3 and MOST 108-2221-E-006-139-MY3. Acknowledgements
Publisher Copyright:
© 2020, The Author(s).
PY - 2020
Y1 - 2020
N2 - In this study, self-catalyzed β-FeSi2 nanowires, having been wanted but seldom achieved in a furnace, were synthesized via chemical vapor deposition method where the fabrication of β-FeSi2 nanowires occurred on Si (100) substrates through the decomposition of the single-source precursor of anhydrous FeCl3 powders at 750–950 °C. We carefully varied temperatures, duration time, and the flow rates of carrier gases to control and investigate the growth of the nanowires. The morphology of the β-FeSi2 nanowires was observed with scanning electron microscopy (SEM), while the structure of them was analyzed with X-ray diffraction (XRD) and transmission electron microscopy (TEM). The growth mechanism has been proposed and the physical properties of the iron disilicide nanowires were measured as well. In terms of the magnetization of β-FeSi2, nanowires were found to be different from bulk and thin film; additionally, longer β-FeSi2 nanowires possessed better magnetic properties, showing the room-temperature ferromagnetic behavior. Field emission measurements demonstrate that β-FeSi2 nanowires can be applied in field emitters.
AB - In this study, self-catalyzed β-FeSi2 nanowires, having been wanted but seldom achieved in a furnace, were synthesized via chemical vapor deposition method where the fabrication of β-FeSi2 nanowires occurred on Si (100) substrates through the decomposition of the single-source precursor of anhydrous FeCl3 powders at 750–950 °C. We carefully varied temperatures, duration time, and the flow rates of carrier gases to control and investigate the growth of the nanowires. The morphology of the β-FeSi2 nanowires was observed with scanning electron microscopy (SEM), while the structure of them was analyzed with X-ray diffraction (XRD) and transmission electron microscopy (TEM). The growth mechanism has been proposed and the physical properties of the iron disilicide nanowires were measured as well. In terms of the magnetization of β-FeSi2, nanowires were found to be different from bulk and thin film; additionally, longer β-FeSi2 nanowires possessed better magnetic properties, showing the room-temperature ferromagnetic behavior. Field emission measurements demonstrate that β-FeSi2 nanowires can be applied in field emitters.
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U2 - 10.1186/s11671-020-03425-7
DO - 10.1186/s11671-020-03425-7
M3 - Article
AN - SCOPUS:85092569469
SN - 1931-7573
VL - 15
JO - Nanoscale Research Letters
JF - Nanoscale Research Letters
IS - 1
M1 - 197
ER -