Issue 30, 2011
From the journal:

Journal of Materials Chemistry

Dumbbell shaped nickel nanocrystals synthesized by a laser induced fragmentation method

Manish Kumar Singh,*a   Arvind Agarwal,a   Ram Gopal,b   Raj Kumar Swarnkarb  and  Ravinder Kumar Kotnalac  

* Corresponding authors

a Department of Physics, Motilal Nehru National Institute of Technology, Allahabad, India
E-mail: maksingh4@gmail.com, arvind.aarvind@gmail.com
Fax: +91-532-2545342
Tel: +91-532-2271263

b Laser Spectroscopy & Nanomaterials Lab, Department of Physics, University of Allahabad, Allahabad, India
E-mail: spectra2@rediffmail.com
Fax: +91-532-2460764
Tel: +91-532-2460764

c National Physical Laboratory, Dr K.S. Krishnan Road, New Delhi, India
E-mail: rkkotnala@mail.nplindia.ernet.in

Abstract

Dumbbell shaped nickel nanoparticles have been synthesized for the first time by laser induced fragmentation of bulk nickel powder in aqueous sodium dodecyl sulfate. The focused output of the third harmonic from a nanosecond pulsed Nd:YAG laser operating at 35 mJ/pulse energy was used for the photo-fragmentation of micron size particles suspended in 50 mM aqueous medium. Nickel anisotropic nanocrystals have been grown by recrystallisation of nickel particles due to laser plasma generated in sodium dodecyl sulfate solution. The Vibrating Sample Magnetometer measurements of dumbbell shaped nickel nanostructure show their good ferromagnetic nature. The mechanism of the synthesis of nanostructure through melting and fragmentation has been also discussed.

Graphical abstract: Dumbbell shaped nickel nanocrystals synthesized by a laser induced fragmentation method

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Article information

DOI
https://doi.org/10.1039/C1JM12320C
Article type
Communication
Submitted
24 May 2011
Accepted
16 Jun 2011
First published
30 Jun 2011

J. Mater. Chem., 2011,21, 11074-11079

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Dumbbell shaped nickel nanocrystals synthesized by a laser induced fragmentation method

M. K. Singh, A. Agarwal, R. Gopal, R. K. Swarnkar and R. K. Kotnala, J. Mater. Chem., 2011, 21, 11074 DOI: 10.1039/C1JM12320C

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