Mn3O4 nanoparticles were prepared by co-precipitation method followed by annealing of samples at 300 °C for 2 hours. The samples were characterized to find the structural, functional, optical, morphological, compositional and magnetic properties by PXRD, FTIR, Micro-Raman, HRSEM, TEM, XPS, EDX and VSM respectively. Structural studies by PXRD indicate that the annealing has strongly influenced the phase transition showing two coexisting phases of Mn2O3 and Mn3O4. Micro-Raman spectra showed the presence of A1g mode of vibration corresponding to Mn3O4 phase. Magnetic studies of the as synthesized Mn3O4 nanoparticles depict paramagnetic behavior at room temperature.

[1] Lin He, 2010, Solid State Communications, 150, 743.
[2] Peng Li, Caiyun Nan, Zhe Wei, Jun Lu, Qing Peng, Yadong Li, 2010, Chemistry of materials, 22, 4232.
[3] Changbin Wang, Longwei Yin, Dong Xiang, Yongxin Qi, 2012 Applied materials and interfaces, 4, 1636.
[4] Yi-Fan Han, Kanaparthi Ramesh, Luwei Chen, Effendi Widjaja, Srilakshmi Chilukoti, Fengxi Chen, 2007, Journal of physical chemistry C, 7, 111.
[5] Dubal, D.P., Dhawale, D.SSalunkhe,, R.R Lokhande C.D., Journal of Electroanalytical Chemistry, 2010, 647, 60.
[6] Duofa Wang, Sangyoon Park, Yongsu Lee, Taiwoon Eom, Seongjae Lee, Young Pak Lee, Cheljong Choi, Jinchai Li, Chang Liu, 2009, Crystal growth and design, 5, 2124.
[7] Yong Cai Zhang, Tao Qiao, Xiao Ya Hu, 2004, Journal of Solid State Chemistry, 177, 4093.
[8] Gopalakrishnan, I.K., Bagkar. N., Ganguly, R., Kulshreshtha, S.K., 2005, Journal of Crystal Growth, 280, 436.
[9] Li-Xia Yanga, Ying-Jie Zhua, Hua Tonga, Wei-Wei Wanga, Guo-Feng Cheng, 2006, Journal of Solid State Chemistry, 179, 1225.
[10] He. X. Wang. Z.H. Geng, D.Y., Zhang, Z.D. 2011, Journal of Material Science Technology, 27, 503.
[11] Gillot, B., El Guendouzi, M., Laarj. M., 2001, Materials Chemistry and Physics, 70, 54.
[12] Irene Rusakova, Teyeb Ould-Ely, Cristina Hofmann, Dario Prieto-Centurion, Carly S. Levin, Naomi J. Halas, Andreas Luttge, Kenton H. Whitmire, 2007, Chemistry of materials, 19, 1369.
[13] Mahalingam, T., Thanikaikarasan. S., Dhanasekaran..V., Kathalingam. A., Velumani. S., Jin-Koo Rhee, 2010, Material Science of Engineering B, 174, 257.
[14] Wagner, C. D., Riggs, W. M. , Davis, L. E., Moulder. J. F., Handbook of X-ray Photoelectron Spectroscopy. First ed., Perkin-Elmer Corporation, 1979 .
[15] Jian Zuo, Cunyi Xu, Yunpiug Liu, Yitai Qian, 1998, Nanostructured Materials, 10, 1331.
[16] Pierre Gibot, Lydia Laffont, 2007, Journal of Solid State Chemistry, 180, 695.
[17] Dubal. D.P., Dhawale,, Gujar, T.P., Lokhande, C.D. , 2011, Applied Surface Science, 257, 3378.
[18] Brian Smith, Infrared Spectral Interpretation: A Systematic Approach, First ed., CRC press, 1999.
[19] Stephen Blundell, Magnetism in Condensed Matter, First ed., Oxford University Press Inc., New York, 2001.

@article{shrividhyancrtam011004,
title = "Synthesis and Study on Structural, Morphological and Magnetic properties of nanocrystalline Manganese Oxide ",
journal = "International Journal of Science and Engineering Applications (IJSEA)",
volume = "NCRTAM",
number = "1",
pages = "13 - 16",
year = "2013",
author = "T. Shrividhya, G.Ravi, T.Mahalingam, Y.Hayakawa ",
}