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IJSEA Archive (Volume 4, Issue 5)

International Journal of Science and Engineering Applications (IJSEA)  (Volume 4, Issue 5 September-October 2015)

Facile Synthesis and Characterization of Pyrolusite, β-MnO2, Nano Crystal with Magnetic Studies

J.S Sherin, J.K. Thomas, Shiney Manoj

10.7753/IJSEA0405.1003




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Keywords: Nanostructures; Chemical synthesis; X-ray diffraction; Magnetic properties.

Abstract References BibText


        MnO2 nanoparticles have been synthesized by a simple combustion method using MnSO4.4H2O. The crystalline phase, morphology, optical property and magnetic property of the as prepared nanoparticle were characterized using XRD, FT-IR, FT-Raman, SEM, UV-Vis, PL and VSM respectively. Structural studies by XRD indicate that the synthesized material as tetragonal rutile crystal structure. FT-IR and FT-Raman analysis revealed the stretching vibrations of metal ions in tetrahedral co-ordination confirming the crystal structure. The PL and UV analysis having an emission band at 390 nm, showed a prominent blue peak at 453 nm as well as a green emission lines at 553 nm with band gap energy of 3.2eV. Magnetic measurements indicate that the Néel temperature of the β-MnO2 structures is 92.5K for Hc = 100 Oe which showed antiferromagnetic behaviour.


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@article{Sherin04051003,
title = " Facile Synthesis and Characterization of Pyrolusite, β-MnO2, Nano Crystal with Magnetic Studies ",
journal = "International Journal of Science and Engineering Applications (IJSEA)",
volume = "4",
number = "5",
pages = "250-252",
year = "2015",
author = " J.S Sherin, J.K. Thomas, Shiney Manoj ",
}