Magnetic and dielectric properties of polycrystalline Co0.5Ni0.5Fe2O4 materials prepared using mechanically alloyed nanoparticles.
Cobalt–nickel ferrite (Co0.5Ni0.5Fe2 O4) were prepared using a high energy milling and sintering. The starting raw materials of NiO, Co3O4 and Fe2O3 were subjected to 12 hr milling using a Spex8000D mixer/mill. The resulting material was molded into samples of toroidal/disc shape and subsequently si...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English |
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World Scientific Publishing
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/25108/1/Magnetic%20and%20dielectric%20properties%20of%20polycrystalline%20Co0.pdf |
| _version_ | 1796970693114462208 |
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| author | Waje, Samaila Bawa Hashim, Mansor W. Yusoff, W.Mohd Daud Abbas, Zulkifly |
| author_facet | Waje, Samaila Bawa Hashim, Mansor W. Yusoff, W.Mohd Daud Abbas, Zulkifly |
| author_sort | Waje, Samaila Bawa |
| collection | UPM |
| description | Cobalt–nickel ferrite (Co0.5Ni0.5Fe2 O4) were prepared using a high energy milling and sintering. The starting raw materials of NiO, Co3O4 and Fe2O3 were subjected to 12 hr milling using a Spex8000D mixer/mill. The resulting material was molded into samples of toroidal/disc shape and subsequently sintered at various temperatures from 600 to 1000° C, at 100° C interval. The effect of sintering temperature on microstructure, saturation magnetization (Ms), and coercivity (Hc) was reported. The frequency dependence of the magnetic and dielectric properties such as permittivity, loss tangent, permeability and loss factor were investigated in the frequency range of 10 MHz–1.8 GHz. The results show that the real part of the permittivity at individual temperatures was constant within the measured frequency, while the loss tangent values decreased gradually with increasing frequency. The real permeability on the other hand remained fairly constant over certain frequency (around 1.0 GHz), and thereafter increases towards saturation thereby showing a good potential in the microwave frequencies region.
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| first_indexed | 2024-03-06T08:01:51Z |
| format | Article |
| id | upm.eprints-25108 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-03-06T08:01:51Z |
| publishDate | 2011 |
| publisher | World Scientific Publishing |
| record_format | dspace |
| spelling | upm.eprints-251082015-10-09T08:19:22Z http://psasir.upm.edu.my/id/eprint/25108/ Magnetic and dielectric properties of polycrystalline Co0.5Ni0.5Fe2O4 materials prepared using mechanically alloyed nanoparticles. Waje, Samaila Bawa Hashim, Mansor W. Yusoff, W.Mohd Daud Abbas, Zulkifly Cobalt–nickel ferrite (Co0.5Ni0.5Fe2 O4) were prepared using a high energy milling and sintering. The starting raw materials of NiO, Co3O4 and Fe2O3 were subjected to 12 hr milling using a Spex8000D mixer/mill. The resulting material was molded into samples of toroidal/disc shape and subsequently sintered at various temperatures from 600 to 1000° C, at 100° C interval. The effect of sintering temperature on microstructure, saturation magnetization (Ms), and coercivity (Hc) was reported. The frequency dependence of the magnetic and dielectric properties such as permittivity, loss tangent, permeability and loss factor were investigated in the frequency range of 10 MHz–1.8 GHz. The results show that the real part of the permittivity at individual temperatures was constant within the measured frequency, while the loss tangent values decreased gradually with increasing frequency. The real permeability on the other hand remained fairly constant over certain frequency (around 1.0 GHz), and thereafter increases towards saturation thereby showing a good potential in the microwave frequencies region. World Scientific Publishing 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/25108/1/Magnetic%20and%20dielectric%20properties%20of%20polycrystalline%20Co0.pdf Waje, Samaila Bawa and Hashim, Mansor and W. Yusoff, W.Mohd Daud and Abbas, Zulkifly (2011) Magnetic and dielectric properties of polycrystalline Co0.5Ni0.5Fe2O4 materials prepared using mechanically alloyed nanoparticles. International Journal of Modern Physics B, 25 (9). pp. 1225-1233. ISSN 0217-9792; ESSN:1793-6578 http://www.worldscientific.com/page/worldscinet 10.1142/S0217979211058626 English |
| spellingShingle | Waje, Samaila Bawa Hashim, Mansor W. Yusoff, W.Mohd Daud Abbas, Zulkifly Magnetic and dielectric properties of polycrystalline Co0.5Ni0.5Fe2O4 materials prepared using mechanically alloyed nanoparticles. |
| title | Magnetic and dielectric properties of polycrystalline Co0.5Ni0.5Fe2O4 materials prepared using mechanically alloyed nanoparticles. |
| title_full | Magnetic and dielectric properties of polycrystalline Co0.5Ni0.5Fe2O4 materials prepared using mechanically alloyed nanoparticles. |
| title_fullStr | Magnetic and dielectric properties of polycrystalline Co0.5Ni0.5Fe2O4 materials prepared using mechanically alloyed nanoparticles. |
| title_full_unstemmed | Magnetic and dielectric properties of polycrystalline Co0.5Ni0.5Fe2O4 materials prepared using mechanically alloyed nanoparticles. |
| title_short | Magnetic and dielectric properties of polycrystalline Co0.5Ni0.5Fe2O4 materials prepared using mechanically alloyed nanoparticles. |
| title_sort | magnetic and dielectric properties of polycrystalline co0 5ni0 5fe2o4 materials prepared using mechanically alloyed nanoparticles |
| url | http://psasir.upm.edu.my/id/eprint/25108/1/Magnetic%20and%20dielectric%20properties%20of%20polycrystalline%20Co0.pdf |
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