Influence of structural changes on electrical and magnetic properties of the Co84Fe5,3Si8,5B2,2 amorphous alloy
The crystallization process of the Co84Fe5.3Si8.5B2.2 amorphous alloy examined by differential scanning calorimetry (DSC) exhibits three exothermal steps at Tcr1=649K, Tcr2=800K, and Tcr3=838K. The rate constants of the first relaxation process (determined at 598K and 623K) are k1=5*10-4 s and k2=8*...
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| Language: | English |
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International Institute for the Science of Sintering, Beograd
2005-01-01
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| Series: | Science of Sintering |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/0350-820X/2005/0350-820X0503231D.pdf |
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| author | Đukić S.R. Simeunović Radojko L. Maričić Aleksa M. |
| author_facet | Đukić S.R. Simeunović Radojko L. Maričić Aleksa M. |
| author_sort | Đukić S.R. |
| collection | DOAJ |
| description | The crystallization process of the Co84Fe5.3Si8.5B2.2 amorphous alloy examined by differential scanning calorimetry (DSC) exhibits three exothermal steps at Tcr1=649K, Tcr2=800K, and Tcr3=838K. The rate constants of the first relaxation process (determined at 598K and 623K) are k1=5*10-4 s and k2=8*10-4 s and the corresponding activation energy Ea1=26.23 kJ/mol. The data for the relaxation process before the second crystallization step (determined at 683K and 713K) are k3=14.5*10-4 s and k4=17.5*10-4 s and the corresponding activation energy Ea2=60.0 kJ/mol. The process of structural relaxation in non-isothermal and isothermal conditions was studied by analysis of the results of measurements of the thermo electromotive force (TEMF). From the change of the temperature coefficient of TEMF that follows each annealing process, the relative electronic state density changes at the Fermi level were determined: ΔN21/N2=5,45%, ΔN22/N2=5,76%, ΔN23/N2=7,57% and ΔN24/N2=9,85%. |
| first_indexed | 2024-04-13T00:15:06Z |
| format | Article |
| id | doaj.art-ba3dd08134be4f208cd190a02e0dca1d |
| institution | Directory Open Access Journal |
| issn | 0350-820X |
| language | English |
| last_indexed | 2024-04-13T00:15:06Z |
| publishDate | 2005-01-01 |
| publisher | International Institute for the Science of Sintering, Beograd |
| record_format | Article |
| series | Science of Sintering |
| spelling | doaj.art-ba3dd08134be4f208cd190a02e0dca1d2022-12-22T03:10:58ZengInternational Institute for the Science of Sintering, BeogradScience of Sintering0350-820X2005-01-0137323123510.2298/SOS0503231DInfluence of structural changes on electrical and magnetic properties of the Co84Fe5,3Si8,5B2,2 amorphous alloyĐukić S.R.Simeunović Radojko L.Maričić Aleksa M.The crystallization process of the Co84Fe5.3Si8.5B2.2 amorphous alloy examined by differential scanning calorimetry (DSC) exhibits three exothermal steps at Tcr1=649K, Tcr2=800K, and Tcr3=838K. The rate constants of the first relaxation process (determined at 598K and 623K) are k1=5*10-4 s and k2=8*10-4 s and the corresponding activation energy Ea1=26.23 kJ/mol. The data for the relaxation process before the second crystallization step (determined at 683K and 713K) are k3=14.5*10-4 s and k4=17.5*10-4 s and the corresponding activation energy Ea2=60.0 kJ/mol. The process of structural relaxation in non-isothermal and isothermal conditions was studied by analysis of the results of measurements of the thermo electromotive force (TEMF). From the change of the temperature coefficient of TEMF that follows each annealing process, the relative electronic state density changes at the Fermi level were determined: ΔN21/N2=5,45%, ΔN22/N2=5,76%, ΔN23/N2=7,57% and ΔN24/N2=9,85%.http://www.doiserbia.nb.rs/img/doi/0350-820X/2005/0350-820X0503231D.pdfamorphous alloys-metallic glassescrystallizationthermo electromotive force |
| spellingShingle | Đukić S.R. Simeunović Radojko L. Maričić Aleksa M. Influence of structural changes on electrical and magnetic properties of the Co84Fe5,3Si8,5B2,2 amorphous alloy Science of Sintering amorphous alloys-metallic glasses crystallization thermo electromotive force |
| title | Influence of structural changes on electrical and magnetic properties of the Co84Fe5,3Si8,5B2,2 amorphous alloy |
| title_full | Influence of structural changes on electrical and magnetic properties of the Co84Fe5,3Si8,5B2,2 amorphous alloy |
| title_fullStr | Influence of structural changes on electrical and magnetic properties of the Co84Fe5,3Si8,5B2,2 amorphous alloy |
| title_full_unstemmed | Influence of structural changes on electrical and magnetic properties of the Co84Fe5,3Si8,5B2,2 amorphous alloy |
| title_short | Influence of structural changes on electrical and magnetic properties of the Co84Fe5,3Si8,5B2,2 amorphous alloy |
| title_sort | influence of structural changes on electrical and magnetic properties of the co84fe5 3si8 5b2 2 amorphous alloy |
| topic | amorphous alloys-metallic glasses crystallization thermo electromotive force |
| url | http://www.doiserbia.nb.rs/img/doi/0350-820X/2005/0350-820X0503231D.pdf |
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