Purification and Characterization of Carbon Nanotubes and the Formation of Magnetic Semiconductors for the Spintronic Application
This article reports the synthesis of carbon nanotubes (CNTs) encapsulating iron (Fe) that would lead to formation of magnetic semiconductors, employing the arc discharge method. Morphology of the samples is studied from transmission electron microscope (TEM) imaging. Data is recorded by x-ray diffractometer (XRD) and identification of the sample constituent by energy dispersion x-ray (EDX). TEM images of metal added samples indicated that defects are completely removed after mono acidic treatment and open air oxidizing at 4000C for 15 minutes, leaving nano sized carbonaceous attached on surfaces of carbon nanotubes and catalyst particles encapsulated. This formation is recognized as a phenomenon at certain temperature. EDX examination shows that there is oxygen constituent remaining after purification along with iron and carbon, perhaps forming FeO during the reaction with water, indicating success in metal incorporation. This envisages that there would be formation of magnetic semiconductors where iron ions may take carbon cites in the CNTs of semiconducting characteristics, as can be revealed from experiments. This suggests that magnetic carbon nanotubes can be used for the spintronic application.
Purification and Characterization of Carbon Nanotubes and the Formation of Magnetic Semiconductors for the Spintronic Application, Science Research.
Vol. 3, No. 3,
2015, pp. 122-128.
S. Iijima, “Helical microtubules of graphitic carbon,”Nature, vol. 354, pp. 56-58, 1991.
S.Iijima, andT. Ichihashi, “Single-shell nanotubes of 1 - nm diameter,”Naturevol. 363, pp. 603-605, 1993
C. Journet,and P. Bernier, “Production of carbon nanotubes,” Appl. Phys.,vol. A 67, pp. 1-9 1998.
A. Yoshinori, Z. Xinluo, I. Sakae, S. Iijimaa, “Mass production of multiwalled carbon nanotubes by hydrogen arc discharge,”J. Crys. Growth, vol. 237-239, pp.1926-1930, 2002.
Z. Shi, Y. Lian, X. Zhou, Z. Gu, Y. Zhang, S. Iijima, L. Zhou, T. K. Yue, and S. Zhang, “Massproduction of single-wall carbon nanotubes by arc discharge method,” Carbon, vol. 37, pp. 1449-1453, 1999.
M. Stancu, G. Ruxanda, D. Ciuparu, and A. Dinescu, “Purification of multiwall carbon nanotubes obtained by AC arc discharge method.Optoelectronics and Advanced Materials, vol. R5( 8), pp. 846-850, 2011.
S.J. Tans, M. H. Devoret, H. Dai, A. Thess, R. E. Smalley, L. J. Georliga, and C. Dekker, “Individual single-wall carbon nanotubes as quantum wires,”Nature, vol.386, pp. 474-477, 1997.
S. J. Tans, R. M. Verschueren, and C. Dekker, “Room temperature transistor based on a single carbon nanotube,”Nature, vol. 393, pp. 49-52, 1998
P. L. McEuen, M. S. Fuhrer, andH. Park.“Single-Walled Carbon Nanotube Electronics,” IEEE Transactions on Nanotechnolog, vol.1(1), pp. 78-85, 2002.
N. Hamada, S. Sawada, and A. Oshiyama, “New One-Dimensional Conductors: Graphitic Microtubules,” Phys. Rev. Lett., vol. 68, pp. 1579-1581, 1992.
C. Garau, A. Frontera, D. Quinonero, A. Costa, P. Ballester, P. M. Dey, “ Lithium diffusion in single-walled carbon nanotubes: a theoretical study,” Chem. Phys. Lett., vol.374, pp. 548-555, 2003.
H. Dai, J. H. Hafner, A. G. Rinzler, D. T. Colbert, and R. E. Smalley, “Nanotubes as Nanoprobes in Scanning Probe Microscopy,” Nature, vol. 384,pp. 147, 1996.
K. T. Lau, ChongGu and D. Hui, “A Critical Review on Nanotube and Nanotube/nanoclayRelated Polymer Composite Materials,” Composites, vol. B 37, pp. 425-436, 2002.
J. H. Ahn, G. X. Wang, H.K. Liu,and S. X. Dou, “Nanoparticle-dispersed PEO polymer electrolytes for Li batteries,” J. Power Sour, vol.119-121, pp.422-426, 2003.
W. A. de Heer, A. Chatelain, and D. Ugarte, “A Carbon Nanotube Field-Emission Electron Source,” Science, vol. 270, pp. 1179-1180, 1995.
R. Martel, T. Schmidt, H. R. Shea, T. Hertel, and Ph. Avouris, “Single- and multi-wall carbon nanotube field-effect transistors,” Appl. Phys. Lett., vol. 73, pp. 2447-2449, 1998.
A. K. Alexander, S. B. Lee, Z. Mei, R. H. Baughman, A. A. Zakhidov, “Electron field emission from transparent multiwalled carbon nanotube sheets for inverted field emission displays,” Carbon, vol.48, pp. 41-46, 2010.
F. Kun, O. Yildiz , H. Bhanushali , Y. Wang , K. Stano, L. Xue ,X. Zhang, and P. D. Bradford, “Aligned Carbon Nanotube-Silicon Sheets: A NovelNano-architecture for Flexible Lithium IonBattery Electrodes,” Adv. Mate, pp. 1-6, 2013.
A. Jensen, J. R. Hauptmann, J. Nygrd, J. Sadowski, andP. E. Lindelof, “Hybrid Devices from Single Wall Carbon Nanotubes Epitaxially Grown into a Semiconductor Heterostructure,” Nano Lett.4 (2), pp. 349-352, 2004.
Z. P. Huang, D. Z. Wang, J. G. Wen, M. Sennett, H. Gibson, and Z. F. Ren, “Effect of nickel, iron and cobalt on growth of aligned carbon nanotubes,” Appl. Phys.vol. A74, pp. 387, 2002.
K. Hernadi, A. Fonseca, J. B. Nagy, D. Bernaerts, and A. A. Lucas, “Fe-Catalyzed Carbon Nanotubes Formation,” Carbon, vol. 34 (10), pp. 1249, 1996.
L. Shao, G. Tobias, C. G. Salzmann, B. Ballesteros, S. You Hong, A. Crossley, B. G. Davis, and M. L. H. Green, “Removal of amorphous carbon for the efficient sidewall functionalisation of single-walled carbon nanotubes,” Chem. Commun., pp. 5090-5092, 2007.
C. Amente, and K. Dharamvir, “Thermally Agitated Self Assembled Carbon Nanotubes and the Scenario of ExtrinsicDefects,” W. J. Nano Sci. and Eng., vol. 5, pp.17-25, 2015.
P. Mahanandia, K. K.Nanda, V. Prasad, and S. V. Subramanyam, “Synthesis and characterization of carbon nanoribbons and single crystal iron filled carbon nanotubes,” Mat. Research Bulletin, vol.43, pp. 3252-3262, 2008.
W. Kici´nski, M. Szala, andM. Nita, “Structurally tailored carbon xerogels produced through a sol–gel process in a water–methanol–inorganic salt solution,” J. Sol-Gel. Sci. Technol, vol. 58, pp. 102, 2011.
P. Scherrer, “Bestimmung der Größe und der innerenStruktur von Kolloidteilchen Mittels Röntgenstrahlen, Nachrichten von der Gesellschaft der Wissenschaften, Gttingen,” Mathematisch-Physikalische Klasse, vol. 2, pp. 98-100, 1918.
N. Grobert, “Carbon nanotubes becoming clean,” Materials today, vol. 10, pp. 28-35, 2007.
C. Journet, W. K. Maser, P. Bernier, A. Loiseau,M. Lamy de laChapelle, S. Lefrant, P. Deniard, R. Lee, J. E. Fischer, “Large-scale production of single-walled carbon nanotubes by the electric-arc technique,” Nature, vol. 388, pp. 756-757, 1997.
T. Dietl, H. Ohno, F. Matsukura, J. Cibert, and D. Ferrand, “Zener model description of ferromagnetism in zinc blende magnetic semiconductors,” Science, vol. 287, pp. 1019-1022, 2000.
Q. Sun, A. K. Kandalam, Q. Wang, P. Jena, Y. Kawazoe, and M. Marquez, “Effect of Au coating on the magnetic and structural properties of Fe nanoclusters for use in biomedical applications: A density-functional theory study,” Phy. Rev., vol. B73, pp. 134409, 2006.