Bimodal to Unimodal Particle Size Distribution Transformation in Nanocrystalline Cobalt – Ferri – Chromites

K.B. Modi¹ , JA. Bhalodia² , T.K. Pathak³ , P.Y. Raval⁴ , P.R. Pansara⁵ , N.H. Vasoya⁶ , C.R. Kathad⁷ , S.J. Shah⁸

1. Dept. of Physics, Saurashtra University, Rajkot, India.
2. Dept. of Physics, Saurashtra University, Rajkot, India.
3. Government Engineering College, Mavdi - Kankot Road, Rajkot, India.
4. Dept. of Physics, Saurashtra University, Rajkot, India.
5. Dept. of Physics, Saurashtra University, Rajkot, India.
6. Dept. of Physics, M S University of Baroda, Vadodara, Vadodara, India.
7. Government Polytechnic College, Porbandar, India.
8. Darshan Institute of Engineering and Technology, Rajkot, India.

Correspondence should be addressed to: kunalbmodi2003@yahoo.com.

Section:Research Paper, Product Type: Isroset-Journal
Vol.6 , Issue.1 , pp.32-36, Feb-2018

CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i1.3236

Online published on Feb 28, 2018

Copyright © K.B. Modi, JA. Bhalodia, T.K. Pathak, P.Y. Raval, P.R. Pansara, N.H. Vasoya, C.R. Kathad, S.J. Shah . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
A meticulous investigation of particle size distribution curves; differential size distribution and cumulative undersize distribution, registered for nano-particulates of spinel structured ferrite system, CoCr2-xFexO4, (x = 0.0, 0.3 and 0.7), prepared through co-precipitation route has been presented. It is established that the distribution transforms from bimodal to unimodal on Fe3+ - substitution. This distribution is not monodisperse and having negative skew. The cause for bimodality lies in the growth mechanism and the respective amount of the particles assembled by nucleation and Ostwald ripening. The function of Fe3+ substitution in regulating signature of the distribution patterns has been deliberated and various micro-structural parameters have been determined.

Key-Words / Index Term :
Nanoparticles, Ferrites, Particle size distribution, Growth mechanism

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