Enhancement of microstructure and initial permeability due to Cu substitution in Ni0.50-xCuxZn0.50Fe 2O4 ferrites
This article was published in the Journal of Magnetism and Magnetic Materials [© 2011 Elsevier B.V.] and the definite version is available at : http://dx.doi.org/10.1016/j.jmmm.2011.02.031 The Journal's website is at: http://www.sciencedirect.com/science/article/pii/S0304885311001417
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© 2011 Elsevier
2016
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| الوصول للمادة أونلاين: | http://hdl.handle.net/10361/7107 http://dx.doi.org/10.1016/j.jmmm.2011.02.031 |
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10361-71072016-12-04T09:13:06Z Enhancement of microstructure and initial permeability due to Cu substitution in Ni0.50-xCuxZn0.50Fe 2O4 ferrites Rahman, M.L. Akther Hossain, A. K M Department of Mathematics and Natural Sciences, BRAC University Auto combustion Hopping length Nanoparticle Néel temperature Permeability Saturation magnetization This article was published in the Journal of Magnetism and Magnetic Materials [© 2011 Elsevier B.V.] and the definite version is available at : http://dx.doi.org/10.1016/j.jmmm.2011.02.031 The Journal's website is at: http://www.sciencedirect.com/science/article/pii/S0304885311001417 Structural and magnetic properties of Cu substituted Ni 0.50-xCuxZn0.50Fe2O4 ferrites (where x=0.00.25) prepared by an auto combustion method have been investigated. The X-ray diffraction patterns of these compositions confirmed the formation of the single phase spinel structure. The lattice parameter increases with the increase in Cu2 content obeying Vegards law. The particle size of the starting powder compositions varied from 22 to 72 nm. The theoretical density increases with increase in copper content whereas the Néel temperature decreases. The bulk density, grain size and permeability increases up to a certain level of Cu2 substitution, beyond that all these properties decrease with increase in Cu2 content. The bulk density increases with increase in sintering temperatures up to 1250 °C for the parent composition, while for substituted compositions it increases up to 1200 °C. Due to substitution of Cu2, the real part of the initial permeability increases from 97 to ∼390 for the sample sintered at 1100 °C and from 450 to 920 for the sample sintered at 1300 °C. The ferrites with higher initial permeability have a relatively lower resonance frequency, which obey Snoeks law. The initial permeability strongly depends on average grain size and intragranular porosity. The saturation magnetization, M s, and the number of Bohr magneton, n(μB), decreases up to x=0.15 due to the reduction of the AB interaction in the AB 2O4 spinel type ferrites. Beyond that value of x, the Ms and the n(μB) values are enhanced. The substitution of Cu2 influences the magnetic parameters due to modification of the cation distribution. Published 2016-12-04T09:09:21Z 2016-12-04T09:09:21Z 2011-08 Article Akther Hossain, A. K. M., & Rahman, M. L. (2011). Enhancement of microstructure and initial permeability due to cu substitution in Ni0.50-xCuxZn0.50Fe 2O4 ferrites. Journal of Magnetism and Magnetic Materials, 323(15), 1954-1962. doi:10.1016/j.jmmm.2011.02.031 03048853 http://hdl.handle.net/10361/7107 http://dx.doi.org/10.1016/j.jmmm.2011.02.031 en http://www.sciencedirect.com/science/article/pii/S0304885311001417 © 2011 Elsevier |
| institution |
Brac University |
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Institutional Repository |
| language |
English |
| topic |
Auto combustion Hopping length Nanoparticle Néel temperature Permeability Saturation magnetization |
| spellingShingle |
Auto combustion Hopping length Nanoparticle Néel temperature Permeability Saturation magnetization Rahman, M.L. Akther Hossain, A. K M Enhancement of microstructure and initial permeability due to Cu substitution in Ni0.50-xCuxZn0.50Fe 2O4 ferrites |
| description |
This article was published in the Journal of Magnetism and Magnetic Materials [© 2011 Elsevier B.V.] and the definite version is available at : http://dx.doi.org/10.1016/j.jmmm.2011.02.031 The Journal's website is at: http://www.sciencedirect.com/science/article/pii/S0304885311001417 |
| author2 |
Department of Mathematics and Natural Sciences, BRAC University |
| author_facet |
Department of Mathematics and Natural Sciences, BRAC University Rahman, M.L. Akther Hossain, A. K M |
| format |
Article |
| author |
Rahman, M.L. Akther Hossain, A. K M |
| author_sort |
Rahman, M.L. |
| title |
Enhancement of microstructure and initial permeability due to Cu substitution in Ni0.50-xCuxZn0.50Fe 2O4 ferrites |
| title_short |
Enhancement of microstructure and initial permeability due to Cu substitution in Ni0.50-xCuxZn0.50Fe 2O4 ferrites |
| title_full |
Enhancement of microstructure and initial permeability due to Cu substitution in Ni0.50-xCuxZn0.50Fe 2O4 ferrites |
| title_fullStr |
Enhancement of microstructure and initial permeability due to Cu substitution in Ni0.50-xCuxZn0.50Fe 2O4 ferrites |
| title_full_unstemmed |
Enhancement of microstructure and initial permeability due to Cu substitution in Ni0.50-xCuxZn0.50Fe 2O4 ferrites |
| title_sort |
enhancement of microstructure and initial permeability due to cu substitution in ni0.50-xcuxzn0.50fe 2o4 ferrites |
| publisher |
© 2011 Elsevier |
| publishDate |
2016 |
| url |
http://hdl.handle.net/10361/7107 http://dx.doi.org/10.1016/j.jmmm.2011.02.031 |
| work_keys_str_mv |
AT rahmanml enhancementofmicrostructureandinitialpermeabilityduetocusubstitutioninni050xcuxzn050fe2o4ferrites AT aktherhossainakm enhancementofmicrostructureandinitialpermeabilityduetocusubstitutioninni050xcuxzn050fe2o4ferrites |
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1814309334050406400 |