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ISSN: 2169-0022

Journal of Material Sciences & Engineering
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Research Article

Positron Annihilation Study of ZnO Nanoparticles Grown Under Folic Acid Template

Sreetama Dutta1, Sourav Sarkar2 and Bichitra Nandi Ganguly1*

1Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, India

2IISER, Kolkata, India

*Corresponding Author:
Bichitra Nandi Ganguly
Saha Institute of Nuclear Physics
1/AF Bidhannagar, Kolkata, India
Tel: 033-2337-2356
E-mail: [email protected]

Received Date: November 18, 2013; Accepted Date: January 16, 2014; Published Date: January 25, 2014

Citation: Dutta S, Sarkar S, Ganguly BN (2014) Positron Annihilation Study of ZnO Nanoparticles Grown Under Folic Acid Template. J Material Sci Eng 3:134. doi: 10.4172/2169-0022.1000134

Copyright: © 2014 Dutta S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Positron lifetime spectroscopy (PAL), Doppler broadening (DB) as well as coincidence Doppler broadening (CDB) spectroscopy of a new variety of Folic acid (FA) capped zinc oxide nano-particle samples has been performed at room temperature. The results show interesting patterns of observation, hither-to unobserved in ZnO wurtzite crystalline samples, such as predominance of positronium formation, as reflected in the (PAL) analysis, phase transition in the nano crystalline samples at ~0.8-1.0 % FA concentration as depicted from DB results. Also, the chemical environment of the samples has been analysed from the ratio curves of CDB studies. Beside these, other independent results from X-ray diffraction (XRD) data and Debye- Scherrer method, Transmission electron microscopic (TEM) observations and as well as Fourier transformed infrared spectroscopic (FT-IR) analysis are reported for comparison.

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