Mechanical alloying of FeCo Nanocrystalline magnetic powders

Li, H. F.; Ramanujan, R.V.

doi:10.1007/s11664-004-0155-1

Cited by 17 publications

(10 citation statements)

References 18 publications

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“…It is observed that all the samples contain only a-Fe phase and have grain size D drops with milling time (Fig. 1), in line with the reported microstructure evolution during milling process [8,9]. More noteworthy is the fluctuation of grain size with composition.…”

Section: Resultssupporting

confidence: 85%

Composition dependence of microstructure, magnetic and microwave properties in ball-milled FeSiB nanocrystalline flakes

Zhou

Xie

Liu

et al. 2008

Journal of Magnetism and Magnetic Materials

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Section: Resultssupporting

confidence: 85%

Composition dependence of microstructure, magnetic and microwave properties in ball-milled FeSiB nanocrystalline flakes

Zhou

Xie

Liu

et al. 2008

Journal of Magnetism and Magnetic Materials

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“…Therefore, the particle size reduction has significantly affected the magnetic properties of natural Fe 2 O 3 based iron ore. The coercivity of as-milled powders increased with milling time; this was attributed to the introduction of defects, oxide, and other contamination during the milling [9,10]. Obviously, the enhanced magnetic properties can be explained as the presence of a surface layer with high concentration of defects induced by the milling process [11].…”

Section: Resultsmentioning

confidence: 99%

Magnetic Behavior of Natural Fe₂O₃ from Lhoong Iron Ore Mining Area, Aceh Province, Indonesia

2013

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The mineral composition and magnetic behavior of nano-Fe 2 O 3 of iron ore from Lhoong mining area, Aceh province, were studied. The iron ore was prepared by mechanical milling method. The mineral and chemical compositions of samples were investigated by XRD and XRF analysis tests. The XRF test showed that the Lhoong iron ore contains Fe 2 O 3 (93.88%) in association with other isomorphous impurities, such as SiO 2 , MnO, and Al 2 O 3 , in varying proportions. Compared to XRD results, it was consistent with XRF; the phase compositions of iron ore were mainly hematite (Fe 2 O 3 ). The XRD revealed that hematite was the major mineral component in the Lhoong iron ores. SEM observation showed fine crystalline structure of Lhoong iron ore after the milling process. The main mineral morphology was microcrystalline in agglomerate forms. The magnetic properties of the samples after milling showed the increasing in the remanent (B ) and coercivity (H ). This increasing can be explained that nano-Fe 2 O 3 phase after milling for 20 hours plays an important role in the magnetic behavior of Lhoong iron ore. It is understood that the longer milling time is sufficient to complete the transformation of hematite (Fe 2 O 3 ) to magnetite (Fe 3 O 4 ).

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“…30 hours of milling were necessary in reference [14]. The mechanical alloying process of FeCo was deeply examined (25 mn -70 h, and for 200 and 300 rpm speed) by Li et al [15]. They have showed that a maximum of the saturation magnetization was obtained for 10-h milling at 300 rpm.…”

Section: Methodsmentioning

confidence: 99%

Microstructural, electrical and magnetic properties of Fe35Co65 thin films grown by thermal evaporation from mechanically alloyed powders

et al. 2014

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We present a detailed study of the microstructural, electrical and magnetic properties of Fe 35 Co 65 thin films deposited by thermal evaporation using nanocrystalline mixture. The nanocrystalline Fe 35 Co 65 powder was prepared by mechanical alloying process using high energy ball milling and then carefully studied. Good homogeneity, purity and stoichiometry were demonstrated in the powder composed of 25 nm mean crystallite size. Microstuctural analysis of Fe 35 Co 65 thin films ranging from 9 to 50 nm deposited on Si (001) shows that the stoichiometry is conserved over the whole thickness range and that (110) texture forms as the film thickness increases. Our work finally demonstrates that high saturation magnetization, low coercivity and high electrical resistivity FeCo thin films can be achieved by thermal evaporation from properly set mechanical alloying powder.

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Mechanical alloying of FeCo Nanocrystalline magnetic powders

Cited by 17 publications

References 18 publications

Composition dependence of microstructure, magnetic and microwave properties in ball-milled FeSiB nanocrystalline flakes

Composition dependence of microstructure, magnetic and microwave properties in ball-milled FeSiB nanocrystalline flakes

Magnetic Behavior of Natural Fe₂O₃ from Lhoong Iron Ore Mining Area, Aceh Province, Indonesia

Microstructural, electrical and magnetic properties of Fe35Co65 thin films grown by thermal evaporation from mechanically alloyed powders

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Mechanical alloying of FeCo Nanocrystalline magnetic powders

Cited by 17 publications

References 18 publications

Composition dependence of microstructure, magnetic and microwave properties in ball-milled FeSiB nanocrystalline flakes

Composition dependence of microstructure, magnetic and microwave properties in ball-milled FeSiB nanocrystalline flakes

Magnetic Behavior of Natural Fe2O3 from Lhoong Iron Ore Mining Area, Aceh Province, Indonesia

Microstructural, electrical and magnetic properties of Fe35Co65 thin films grown by thermal evaporation from mechanically alloyed powders

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Magnetic Behavior of Natural Fe₂O₃ from Lhoong Iron Ore Mining Area, Aceh Province, Indonesia