Study on synthesis of magnetic nanocomposite (Ni-Teflon) by swift heavy ion beam mixing

Jai Prakash1,2*, A. Tripathi2, J. C. Pivin3, Jalaj Tripathi1, A. K. Chawla4, Ramesh Chandra4, S. S. Kim5, K. Asokan2, D. K. Avasthi2

1Department of Chemistry, M.M.H (P.G) College, Ghaziabad 201001, India

2Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India

3CSNSM, IN2P3-CNRS, Batiment 108, F-91405 Orsay Campus, France

4Institute Instrumentation Centre, Indian Institute of Technology, Roorkee 247667, India

5School of Materials Science and Engineering, Inha University, Incheon, South Korea

Adv. Mater. Lett., 2012, 2 (1), pp 71-75

DOI: 10.5185/amlett.2010.12187

Publication Date (Web): Apr 08, 2012

E-mail: jai.gupta1983@gmail.com

Abstract


The present work envisages synthesis of magnetic nanocomposites by ion beam mixing technique using swift heavy ion irradiation of Ni-Teflon bilayer system and its magnetic characterizations. The nanocomposite is characterized by Rutherford backscattering spectrometry (RBS), transmission electron microscopy (TEM), scanning probe microscopy (SPM) and superconducting quantum interference device (SQUID) magnetometer. Cross-sectional TEM and magnetic force microscopy (MFM) results confirm the formation of nanocomposite. Magnetic characterizations reveal that nanocomposite exhibits ferromagnetic behavior with an increase in the coercivity, which is attributed to the formation of Ni nanoparticles. The coercivity of the nanocomposite is found to be 112 Oe at room temperature which is two orders of magnitude larger than that of the bulk Ni (0.87 Oe).

Keywords

Ion beam mixing, swift heavy ions, metal-polymer nanocomposite, magnetic properties.

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