Synthesis of barium ferrite ultrafine powders by a sol–gel combustion method using glycine gels

The ultrafine powders of barium ferrite (BaFe12O19) were synthesized by a sol–gel combustion technique using glycine gels prepared from metal nitrates and glycine solutions. The effects of processing parameters such as initial Fe/Ba molar ratio, the dosage of glycine and calcination temperature on t...

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Main Authors: Jiao, D.L., Shukla, S., Ramanujan, R.V., Liu, Z.W., Meng, Y.Y., He, M.H., Zeng, Q.
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2014
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Online Access:https://hdl.handle.net/10356/102931
http://hdl.handle.net/10220/24392
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1029312020-06-01T10:26:37Z Synthesis of barium ferrite ultrafine powders by a sol–gel combustion method using glycine gels Jiao, D.L. Shukla, S. Ramanujan, R.V. Liu, Z.W. Meng, Y.Y. He, M.H. Zeng, Q. School of Materials Science & Engineering DRNTU::Engineering::Materials The ultrafine powders of barium ferrite (BaFe12O19) were synthesized by a sol–gel combustion technique using glycine gels prepared from metal nitrates and glycine solutions. The effects of processing parameters such as initial Fe/Ba molar ratio, the dosage of glycine and calcination temperature on the crystalline phase formation, microstructure and magnetic properties were systematically investigated. The results showed that the formation of single-phase barium ferrite is significantly influenced by Fe/Ba molar ratio which is the optimum at 9/1. The XRD patterns revealed that high calcination temperature and large glycine dosage are beneficial for the formation of barium ferrite. The TEM and size distribution demonstrated that the BaFe12O19 powders have plate-like shape with crystallite size varied from 55 to 110 nm. The products with high coercive force of 5750 Oe and saturation magnetization of 67.7 emu/g were obtained when the glycine/nitrates molar ratio and calcination temperature are 12/9 and 900 °C, respectively. 2014-12-09T07:29:50Z 2019-12-06T21:02:26Z 2014-12-09T07:29:50Z 2019-12-06T21:02:26Z 2013 2013 Journal Article Meng, Y. Y., He, M. H., Zeng, Q., Jiao, D. L., Shukla, S., Ramanujan, R. V., et al. (2014). Synthesis of barium ferrite ultrafine powders by a sol–gel combustion method using glycine gels. Journal of alloys and compounds, 583, 220-225. 0925-8388 https://hdl.handle.net/10356/102931 http://hdl.handle.net/10220/24392 10.1016/j.jallcom.2013.08.156 en Journal of alloys and compounds © 2013 Elsevier.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Materials
spellingShingle DRNTU::Engineering::Materials
Jiao, D.L.
Shukla, S.
Ramanujan, R.V.
Liu, Z.W.
Meng, Y.Y.
He, M.H.
Zeng, Q.
Synthesis of barium ferrite ultrafine powders by a sol–gel combustion method using glycine gels
description The ultrafine powders of barium ferrite (BaFe12O19) were synthesized by a sol–gel combustion technique using glycine gels prepared from metal nitrates and glycine solutions. The effects of processing parameters such as initial Fe/Ba molar ratio, the dosage of glycine and calcination temperature on the crystalline phase formation, microstructure and magnetic properties were systematically investigated. The results showed that the formation of single-phase barium ferrite is significantly influenced by Fe/Ba molar ratio which is the optimum at 9/1. The XRD patterns revealed that high calcination temperature and large glycine dosage are beneficial for the formation of barium ferrite. The TEM and size distribution demonstrated that the BaFe12O19 powders have plate-like shape with crystallite size varied from 55 to 110 nm. The products with high coercive force of 5750 Oe and saturation magnetization of 67.7 emu/g were obtained when the glycine/nitrates molar ratio and calcination temperature are 12/9 and 900 °C, respectively.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Jiao, D.L.
Shukla, S.
Ramanujan, R.V.
Liu, Z.W.
Meng, Y.Y.
He, M.H.
Zeng, Q.
format Article
author Jiao, D.L.
Shukla, S.
Ramanujan, R.V.
Liu, Z.W.
Meng, Y.Y.
He, M.H.
Zeng, Q.
author_sort Jiao, D.L.
title Synthesis of barium ferrite ultrafine powders by a sol–gel combustion method using glycine gels
title_short Synthesis of barium ferrite ultrafine powders by a sol–gel combustion method using glycine gels
title_full Synthesis of barium ferrite ultrafine powders by a sol–gel combustion method using glycine gels
title_fullStr Synthesis of barium ferrite ultrafine powders by a sol–gel combustion method using glycine gels
title_full_unstemmed Synthesis of barium ferrite ultrafine powders by a sol–gel combustion method using glycine gels
title_sort synthesis of barium ferrite ultrafine powders by a sol–gel combustion method using glycine gels
publishDate 2014
url https://hdl.handle.net/10356/102931
http://hdl.handle.net/10220/24392
_version_ 1681057447758790656