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Microstructural evolution and magnetic properties of size-controlled nanocrystalline Ni in Ni(OH)2–ZrO2 composite

Published online by Cambridge University Press:  31 January 2011

Bibhuti B. Nayak ,
Satish Vitta  and
D. Bahadur
Bibhuti B. Nayak
Affiliation:
Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology, Mumbai 400076, India
Satish Vitta*
Affiliation:
Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology, Mumbai 400076, India
D. Bahadur
Affiliation:
Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology, Mumbai 400076, India
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Size-controlled nanocrystallites of Ni varying in size from 2 to 26 nm distributed in a nonmagnetic matrix of Ni(OH)2–ZrO2have been prepared by changing the reduction reaction time and by adding different concentrations of ZrOCl2solution to the initial reaction mixture. X-ray photoelectron spectroscopy indicates the presence of B2O3, Ni(OH)2, and ZrO2with Ni nanocrystals in the as-prepared composites. The room-temperature saturation magnetization and coercivity of the composites increases from ∼1.5 to 10 emu g−1and 100 to 200 Oe, respectively, when the ZrOCl2concentration in the reaction mixture increases to 0.10 M. The nanocrystals prepared without the addition of ZrOCl2exhibit a typical ferromagnetic response at 300 K, while that prepared with the addition of 0.10 M ZrOCl2shows a ferromagnetic response up to 400 K with higher saturation magnetization and coercivity.

Keywords

FerromagneticNanoscaleNi
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 6 , June 2007 , pp. 1520 - 1526
Copyright
Copyright © Materials Research Society2007

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References

REFERENCES

1Dorman, J.L., Fiorani, D.Tronc, E.: Magnetic relaxation in fine particle systems. Adv. Chem. Phys. 98, 283 1997Google Scholar
2Leslie-Pelecky, D.L.Rieke, R.D.: Magnetic properties of nanostructured materials. Chem. Mater. 8, 1770 1996CrossRefGoogle Scholar
3Li, J., Qin, Y., Kou, X.Huang, J.: The microstructure and magnetic properties of Ni nanoplatelets. Nanotechnology 15, 982 2004CrossRefGoogle Scholar
4Ngo, A.Pileni, M.P.: Nanoparticles of Cobalt Ferrite: Influence of the applied field on the organization of the nanocrystals on a substrate and on their magnetic properties. Adv. Mater. 12, 276 20003.0.CO;2-D>CrossRefGoogle Scholar
5Lieber, C.M.: One-dimensional nanostructures: Chemistry, physics and applications. Solid State Commun. 107, 607 1998CrossRefGoogle Scholar
6Yiping, L., Hadajipanayis, G.C., Sorensen, C.M.Klabunde, K.J.: Magnetic and structural properties of ultrafine Co-B particles. J. Magn. Magn. Mater. 79, 321 1989CrossRefGoogle Scholar
7Glavee, G.N., Klabunde, K.J., Sorensen, C.M.Hadajipanayis, G.C.: Borohydride reduction of nickel and copper ions in aqueous and nonaqueous media: Controllable chemistry leading to nanoscale metal and metal boride particles. Langmuir 10, 4726 1994CrossRefGoogle Scholar
8Roy, A., Srinivas, V., Ram, S., De Toro, J.A.Riveiro, J.M.: Effect of interstitial oxygen on the crystal structure and magnetic properties of Ni nanoparticles. J. Appl. Phys. 96, 6782 2004CrossRefGoogle Scholar
9Sun, X-C.Dong, X-L.: Magnetic properties and microstructure of carbon encapsulated Ni nanoparticles and pure Ni nanoparticles coated with NiO layer. Mater. Res. Bull. 37, 991 2002CrossRefGoogle Scholar
10Sharpe, A.G.: Inorganic Chemistry(Addison Wesley, New York, 1992), p. 619Google Scholar
11NIST x-ray photoelectron spectroscopy database. Edited by C.D. Wagner, A.V. Naumkin, A. Kraut-Vass, J.W. Allison, C.J. Powell, and J.R. Rumble, Jr. http://srdata.nist.gov/xpsGoogle Scholar
12Legrand, J., Taleb, A., Gota, S., Guittet, M.J.Petin, C.: Synthesis and XPS characterization of nickel boride nanoparticles. Langmuir 18, 4131 2002CrossRefGoogle Scholar
13Rojo, J.M., Hernando, A., El Ghannami, M., Garcia-Escorial, A., Gonzalez, M.A., Garcia-Martinez, R.Ricciarelli, L.: Observation and characterization of ferromagnetic amorphous nickel. Phys. Rev. Lett. 76, 4833 1996CrossRefGoogle ScholarPubMed
14Park, S-J., Kim, S., Lee, S., Khim, Z.G., Char, K.Hyeon, T.J.: Synthesis and magnetic studies of uniform iron nanorods and nanospheres. J. Am. Chem. Soc. 122, 8581 2000CrossRefGoogle Scholar