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arXiv · 1401.1635

Positron Annihilation Study of Zn O Nanoparticles Grown under Folic Acid Template

Sreetama Dutta·Sourav Sarkar·Bichitra Nandi Ganguly
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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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Sreetama Dutta, Sourav Sarkar, Bichitra Nandi Ganguly. 2014-01-08. Positron Annihilation Study of Zn O Nanoparticles Grown under Folic Acid Template. https://arxiv.org/abs/1401.1635

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