Study of Temperature Sintering by Microwave Energy in Ferrites Ni_0,5Zn_0,5Fe₂O₄

Abstract:

This study proposes to evaluate the influence of the variation of sintering temperature on microstructural characteristics and magnetic ferrite Ni_0,5Zn_0,5Fe₂O₄ sintered by microwave energy. The samples were sintered at 900, 1000, 1100 and 1200°C for exposure time of 10 minutes, with rate 50°C/minutes and characterized by density and porosity, X-ray diffraction, scanning electron microscopy and magnetic measurements. The results indicate that the values of density and apparent porosity were 4.2, 4.5, 4.4 and 4.5 g/cm³ and 3.4, 2.1, 2.2 and 2.4% for the sintering temperatures of 900, 1000, 1100 and 1200°C respectively. The formation of the ferrite phase Ni_0,5Zn_0,5Fe₂O₄ been identified for all conditions of sintering, with grain sizes of 52, 62, 71 and 58nm and saturation magnetization values of 63, 68, 69 and 27 emu/g to temperatures sintering 900, 1000, 1100 and 1200°C respectively.

• Periodical: Materials Science Forum (Volumes 775-776)
• Pages: 410-414
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.775-776.410
• Online since: January 2014
• Authors: Verônica Cristina Souza Diniz, Débora A. Vieira, Ruth Herta Goldsmith Aliaga Kiminami, Daniel Cornejo, Ana Cristina Figueiredo de Melo Costa
• Keywords: Microwave Energy, Ni-Zn Ferrite, Sintering

References

[1] R.C. Pessoa, Study of magnetic and absorbing characteristics of the NiZn ferrites, NiZnMn, MnZn, NiMg, and NiCuZn NiCuZnMg obtained via the citrate precursor method. Doctoral (Thesis). Natal, 2009. Universidade Federal do Rio Grande do Norte. (UFRN/EM). (RN) (In Portuguese).

DOI: 10.22239/2317-269x.01743

[2] Y.Q. LI, Y. Huang, L. NIU. Journal of Magnetism and Magnetic Materials Vol. 323 (2011), p.2224.

[3] K.S. Lin, A.K. Adhikari , Z.Y. Tsai, Y.P. Chen, T.T. Chien and H.B. Tsai: Catalysis Today Vol. 174 (2011), p.88.

[4] A.A. Aziz, K.S. Yong, S. Ibrahim, S. Pichiah: Journal of Hazardous Materials Vol. 199-200 (2012), p.143.

[5] V. Cabuil, V. Dupuis, D. Talbot, S. Neveu: Journal of Magnetism and Magnetic Materials Vol. 323, (2011), p.1238.

[6] C. Wei, X. Shen, F. Song, Y. Zhu, Y. Wang: Materials and Design Vol. 35 (2012), p.363.

[7] C.S.S.R. Kumar and F. Mohammad: Advanced Drug Delivery Reviews Vol. 63 (2011), p.789.

[8] J. Hines and L. Nickels: Metal Powder Report Vol. 66 (2011), p.7.

[9] R.R. Menezes, P.M. Souto, R.H.G.A. Kiminami: Cerâmica Vol. 53 (2007), p.1.

[10] F.J.B. Brum: Dewaxing microwave in the process of precision casting. Master (Dissertation). Porto Alegre, 2007. Universidade Federal do Rio Grande do Sul (UFRGS). (RS). (In Portuguese).

DOI: 10.32467/issn.2175-3628v23n1a14

[11] D.A. Vieira: Synthesis by microwave energy of Ni-Zn ferrite. Master (Dissertation). Campina Grande, 2009. Universidade Federal de Campina Grande (UFCG). (PB) (In Portuguese).

DOI: 10.24873/j.rpemd.2021.10.846

[12] M. Ahmad, I. Ali, F. Aen, M.U. Islam, M.N. Ashiq, S. Atiq, W. Ahmad and M.U. Rana: Ceramics International Vol. 38 (2012), p.1267.

DOI: 10.1016/j.ceramint.2011.08.059

[13] K. Pravena, K. Sadhana and S.R. Murthy: Journal of Magnetism and Magnetic Materials Vol. 323 (2011), p.2122.

[14] C. Sujatha, K.V. Reddy, K. SowriBab, A.R.C. Reddy and K.H. Rao: Ceramics International, (2012).