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HomeMaterials Science ForumMaterials Science Forum Vols. 727-728Comparative Analysis of Sintering...

Comparative Analysis of Sintering Mn_0.65Zn_0.35Fe₂O₄Ferrite by Microwave Energy and N₂ Atmosphere

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Abstract:

Research in Mn-Zn ferrites have been growing in recent years, mainly because of the properties in high frequency application such as high saturation magnetization, low core losses, which are sensitive to the structure, processing conditions, such as sintering temperature, time and atmosphere. This study aims to evaluate the microstructure and magnetic characteristics Mn_0.65Zn_0.35Fe₂O₄ ferrite sintered in N₂atmosphere and to microwave energy at 1200°C/2h. The samples were compacted by uniaxial pressing at 200 MPa and sintered in a microwave oven with a heating rate of 50°C/min and sintering time of 30 min. For samples sintered in N₂ atmosphere was used heating rate of 5°C/min with sintering time of 2 hours. The samples were characterized by apparent and bulk density, XRD, SEM and magnetic measurements. The results indicate the formation single phase of Mn-Zn ferrite for sample sintering in N₂ atmosphere, and to sintering by microwave oven observed the phase ferrite Mn-Zn with trace of secondary phase hematite. The density and saturation magnetization were 3.14 and 3.12 g/cm³, 5 and 83 emug^-1 for the samples sintered by microwave energy and N₂ atmosphere respectively.

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Advanced Powder Technology VIII

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Periodical:

Materials Science Forum (Volumes 727-728)

Pages:

1272-1277

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.727-728.1272

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Online since:

August 2012

Authors:

R.L.P. Santos, M.M. Tavares, Daniel Cornejo, Ruth Herta Goldsmith Aliaga Kiminami, Ana Cristina Figueiredo de Melo Costa

Keywords:

Microwave Oven, Mn-Zn Ferrites, N₂ Atmosphere, Sintering

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] E. C. Snelling: Soft ferrites Properties and Applications. Edtied by Butterworth & Co. (Publishers) Ltd. (1988).

[2] A. Znidarsic. IEEE Transactions on Magnetics. Vol. 31 (1995).

[3] V. T. Zaspalis, V. Tsakaloudi, M. Kolenbrander. Journal of magnetism and magnetic materials, Vol. 313 (2007), pp.29-36.

DOI: 10.1016/j.jmmm.2006.11.210

[4] A. Bienkowski, Journal of Physique, Vol. 46 (1985), p.433.

[5] A. Figuerola, D. R. Corato, L. Manna, T. Pellegrino. Pharmacological Research. Vol. 62 (2010) 126-143.

[6] Gama A. M. Efeito das proporções de Mn/Zn e Fe/Mn + Zn na temperatura de Curie de ferritas do tipo (Mn + Zn)1-xFe2+xO4+. Dissertação apresentada na escola politécnica da Universidade de São Paulo, (2003).

DOI: 10.11606/t.11.1982.tde-20210104-163552

[7] C. M. Hung. Journal of rare earths. Especial Issue. Vol. 28 (2010), p.362.

[8] K. Rao, Journal Applied Physic, Vol. 52 (1981), pp.1376-1379.

[9] S. J. Ahns, C. S. YOON, S. G. Yoon, C. K. KIM, T.Y. Byun. K. S. Hong. Materials. Science. and Engineering. Vol. B 84 (2001), pp.146-154.

DOI: 10.1016/s0921-5107(00)00585-7

[10] A. C. F. M. Costa; A. P. A. Diniz, L. Gama,M. R. Morelli, R. H. G. A. Kiminami. Journal Metas. Nanocrystalite Materials. Vol. 20-21 (2004), pp.582-587.

[11] R. R. Mello. Desenvolvimento de Sensores de Gases à base de Ferritas do Tipo MFe2O4 (M = Mn, Zn e Ni). Dissertação apresentada à Universidade Estadual de Maringá, (2008).

[12] S. Y. Chou,S. L. Lo, C. H. Hsieh, C. L. Chen, Journal of Hazardous Materials. Vol. 163 (2009), pp.357-362.

[13] H. Klung, L. Alexander. In : X-ray Diffraction Procedures. Edtied by John Wiley, New York, EUA (1962).

[14] R. L. P. Santos, Avaliação dos combustíveis uréia e glicina na Síntese por reação de combustão de ferrita Mn0. 65Zn0. 35Fe2O4., Dissertação de Mestrado apresentada à banca da Universidade Federal de Campina Grande – UFCG, (2011).

DOI: 10.24873/j.rpemd.2021.10.846

[15] C. O. Robert: Modern Magnetic Materials-Principles and Applications. Edtied by A Wiley-Interscience Publication, John Wiley & Sons, New York (1942).

[16] A. M. Gama, F. J. G. Landgraf, D. Rodrigues, S. R. Janasi, D. Gouvêa. In: 57º Congresso Anual da ABM – Internacional. Vol. 57 (2002), pp.832-841.

[17] A. C. F. M. Costa, V. J. Silva, C. C. Xin, D. A. Vieira, D. R. Cornejo, R. H. G. A Kiminami. Journal of Alloys and Compounds. Vol, 495 (2010) 503-505.

[18] J. W. Stcki, B. A. Goodman and U. Schewertmann: Iron in soils and clay minerals. Edtied by D. Reidel Publishine Company, Holland (1985).

[19] A. M. R. Pimenta. Nanopartículas magnéticas para nanomedicina. Dissertação para obtenção do grau de mestre em Engenharia de Materias. Instituto Superior Técnico, Universidade de Lisboa. Outubro de (2010).

DOI: 10.37423/2022.edcl612