Abstract
Cobalt nanorods have been prepared through solvothermal process with hydrazine hydrate and dimethylglyoxime (DMG) as reducing and morphology directing agents. The phase structure, morphology and magnetic properties of the as-prepared product were extensively characterized by X-ray diffraction, transmission electron microscopy and superconducting quantum interference device magnetometer. X-ray diffraction pattern revealed that the as-synthesized product was cobalt with face-centered cubic structure. Transmission electron microscopy observation showed that the as-prepared product composed of rod-like shape with size around 10 nm. The presence of DMG molecules on the surface of Co nanostructures was confirmed by the FTIR spectra. Magnetic measurements revealed that the nanorod exhibit ferromagnetic behavior at 300 K. The coercive force value of cobalt nanorods is 340 Oe at 300 K. Compared with bulk cobalt, the nanorods exhibit significant increase in coercive force as a reflection of shape anisotropy. The saturation magnetization value of Co nano rod is 150 emu/g at room temperature.
Similar content being viewed by others
References
F. Caruso, M. Spasova, A. Susha, M. Giersig, R.A. Caruso, Chem. Mater. 13, 109 (2001)
T. Hyeon, S.S. Lee, J. Park, Y. Chung, H.B. Na, J. Am. Chem. Soc. 123, 12798 (2001)
Y. Xiong, Y. Xie, S. Chen, Z. Li, Chem. Eur. J. 9, 4991 (2003)
K. Woo, H.J. Lee, J. Ahn, Y.S. Park, Adv. Mater. 15, 1761 (2003)
X. Teng, H. Yang, J. Mater. Chem. 14, 774 (2004)
A.C.C. Yu, M. Mizuno, Y. Sasaki, H. Kondo, K. Hiraga, Appl. Phys. Lett. 81, 3768 (2002)
Y. Kobayashi, M. Horie, M. Konno, B.R. Gonzalez, L.M.L. Marzan, J. Phys. Chem. B 107, 7420 (2003)
V.F. Puntes, K.M. Krishnan, A.P. Alivisatos, Science 291, 2115 (2001)
H. Li, S. Liao, J. Magn. Magn. Mater. 321, 2566 (2009)
C.T. Black, C.B. Murrary, R.L. Sandstrom, S.H. Sun, Science 290, 1131 (2000)
L.P. Zhu, W.D. Zhang, H.M. Xiao, Y. Yang, S.Y. Fu, J. Phys. Chem. C 112, 10073 (2008)
N. Matoussevitch, A. Gorschinski, W. Habicht, J. Bolle, E. Dinjus, H. Bonnemann, J. Magn. Magn. Mater. 311, 92 (2007)
W. Liu, W. Zhong, X. Wu, N. Tang, Y. Du, J. Cryst. Growth 284, 446 (2005)
Y. Su, X. Ouyang, J. Tang, Appl. Surf. Sci. 256, 2353 (2010)
O. Margeat, C. Amiens, B. Chaudret, P. Lecante, R.E. Benfield, Chem. Mater. 17, 107 (2005)
Y. Hou, H. Kondoh, T. Ohta, Chem. Mater. 17, 3994 (2005)
C. Wang, X. Han, P. Xu, J. Wang, Y. Du, X. Wang, W. Qin, T. Zang, J. Phys. Chem. C 114, 3196 (2010)
H.Q. Cao, Z. Xu, H. Sang, D. Sheng, C.Y. Tie, Adv. Mater. 13, 121 (2001)
D.L.L. Pelecky, R.D. Rieke, Chem. Mater. 8, 1770 (1996)
Acknowledgments
One of the authors M. Alagiri is thankful to the SRM University for providing Research fellowship.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Alagiri, M., Muthamizhchelvan, C. Solvothermal preparation of cobalt nanorods. J Mater Sci: Mater Electron 24, 1112–1115 (2013). https://doi.org/10.1007/s10854-012-0889-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10854-012-0889-0