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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Latuch, Jerzy
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2019Effect of silver content in Zr<inf>55</inf>Cu<inf>30</inf>Ni<inf>5</inf>Al<inf>10−x</inf>Ag<inf>X</inf> alloys on the supercooled liquid stability analysed by TTT diagrams
- 2017Influence of cobalt content on the structure and hard magnetic properties of nanocomposite (Fe,Co)-Pt-B alloyscitations
- 2017Isothermal Stability and Selected Mechanical Properties of Zr48Cu36Al8Ag8 Bulk Metallic Glasscitations
- 2011Soft magnetic amorphous Fe–Zr–Si(Cu) boron-free alloyscitations
- 2011Correlation between the size of Nd<inf>60</inf>Fe<inf>30</inf>Al <inf>10</inf> sample, cast by various techniques and its coercivity
- 2010Structural and magnetic properties of the ball milled Fe <inf>56</inf> Pt <inf>24</inf> B <inf>20</inf> alloycitations
- 2010Novel amorphous Fe-Zr-Si(Cu) boron-free alloyscitations
- 2010Structural transformations and magnetic properties of Fe <inf>60</inf> Pt <inf>15</inf> B <inf>25</inf> and Fe <inf>60</inf> Pt <inf>25</inf> B <inf>15</inf> nanocomposite alloyscitations
- 2009Magnetic properties of the Fe48.75 Pt 26.25 B 25 nanostructured alloycitations
- 2008Effect of processing parameters on the structure and magnetic properties of Nd60Fe30Al10 alloycitations
- 2007Crystallization behaviour of the Fe <inf>60</inf> Co <inf>10</inf> Ni <inf>10</inf> Zr <inf>7</inf> B <inf>13</inf> metallic glasscitations
- 2005Crystallization kinetics of Al-Mm-Ni-(Co,Fe) alloyscitations
- 2005Amorphous bulk alloys from Al-Mm-Ni system produced by hot compaction
- 2004Crystallisation behaviour of rapidly quenched cast irons with small amount of boroncitations
- 2004Magnetic and transport properties of nanocrystallizing supercooled amorphous alloy Fe74Al4Ga2P11B4Si4Cu1citations
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article
Influence of cobalt content on the structure and hard magnetic properties of nanocomposite (Fe,Co)-Pt-B alloys
Abstract
The influence of Co content on the structural and hard magnetic properties of two sets of nanocrystalline Fe52−xCoxPt28B20 (x = 0–26) and Fe60−yCoyPt25B15 (y = 0–40) alloys was studied. The alloys were prepared as ribbons by the rapid quenching technique. The nanocomposite structure in the alloys was obtained by annealing at 840–880 K for 30 min. Structural characterization of the samples was performed using the Mössbauer spectroscopy and X-ray diffraction. Magnetic properties of the samples were studied by the measurements of the hysteresis loops and of the magnetization at increasing temperatures. An amorphous phase prevailed in the as-quenched Fe52−xCoxPt28B20 alloys while a disordered solid solution of fcc-(Fe,Co)Pt was a dominating phase in the Fe60−yCoyPt25B15 ribbons. Differential scanning calorimetry measurements revealed one or two exothermic peaks at temperatures up to 993 K, depending on the composition of the alloys. Thermal treatment of the samples led to the formation of the magnetically hard ordered L10 tetragonal (Fe,Co)Pt nanocrystallites and magnetically softer phases of (Fe,Co)B (for Fe52−xCoxPt28B20) or (Fe,Co)2B (for Fe60−yCoyPt25B15). Detailed Mössbauer spectroscopy studies revealed that cobalt substituted for iron in both the L10 phase and in iron borides. The nanocomposite Fe60−yCoyPt25B15 alloys exhibited significantly larger magnetic remanence and maximum energy products but a smaller coercivity than those observed for the Fe52−xCoxPt28B20 alloys. Co addition caused a reduction of the magnetization and the energy product in both series of the alloys. The largest magnetic remanence of 0.87 T and the highest energy product (BH)max = 80 kJ/m3 were obtained for the Co-free Fe52Pt28B20 alloy while the largest coercivity (HC > 950 kA/m) was observed for the Fe50Co10Pt25B15 and Fe30Co30Pt25B15 alloys. Differences in the hard magnetic properties of the nanocomposite alloys were related to different phase compositions influencing the strength of inter-phase exchange coupling interactions