Improving soft magnetic properties in FINEMET-like alloys. A study

Moya, J.

doi:10.1016/j.jallcom.2014.10.124

Cited by 18 publications

(2 citation statements)

References 24 publications

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“…The magnetocrystalline Cr substituted Febased metallic glasses has been the subject of intensive research not only for the promising technological applications but the co-existence of various magnetic phases at an elevated temperature which make them attractive for studying basic magnetic phenomena. [20][21][22] The main theme of the present paper is to synthesize Fe-based alloy of Fe 73.5 Nb 3 Cu 1 Si 13.5 B 9 composition in the amorphous state by using rapid quenching technique and study the formation of different phases by varying annealing temperature (T a ). The evolution of nanograins and the magnetic properties in the as-prepared condition are also investigated.…”

Section: Introductionmentioning

confidence: 99%

Study of crystallization phases and magnetic properties of Fe72.5Cr1Nb3Cu1Si13.5B9 nanocrystalline alloy prepared by rapid quenching method

Mt¹

2020

MSEIJ

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Phase constitution and soft magnetic properties of nanocrystalline alloy of composition Fe 72.5 Cr 1 Nb 3 Cu 1 Si 13.5 B 9 prepared by single roller rapid quenching technique was investigated in this paper. The amorphous nature and the nanocrystal formation of the alloy was determined by X-ray diffraction (XRD) besides the crystallization kinetics was studied by Differential Thermal Analysis (DTA). The annealing temperature was maintained within the range 450 o C to 800 o C for 30minutes. DTA study reveals the existence of two exothermic peaks one for primary crystallization of á Fe(Si) −phase and other for secondary crystallization of Fe 2 B phase. The temperature difference between two crystallization peaks is found to exist ~170 o C. This large temperature gap is an indication of the enhancement of stability of á Fe(Si − phase against detrimental Fe 2 B phase. In the optimized annealing condition, the grain size has been obtained in the range of 10-15 nm. The saturation magnetization (M s ) has been observed 128 Am 2 /kg. In as-prepared condition Curie temperature (T c ) was found 316 o C, close compared to the T c of original FINEMET. Thus, a slight substitution (1 atomic %) of iron (Fe) by chromium (Cr) in original FINEMET enhances the thermo-magnetic stability of the alloy.

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Section: Introductionmentioning

confidence: 99%

Study of crystallization phases and magnetic properties of Fe72.5Cr1Nb3Cu1Si13.5B9 nanocrystalline alloy prepared by rapid quenching method

Mt¹

2020

MSEIJ

View full text Add to dashboard Cite

show abstract

“…The amorphous ferromagnetic matrix basically provides the magnetic coupling between nanograins and the magnetoelastic energy balance. In the amorphous matrix, the saturation magnetization and magnetostriction constant are not altered significantly by small changes in its composition, contrary to what occurs in the crystalline phase [1]. Hence, for a proper soft magnetic design and for a better comprehension of the magnetic behavior of these materials, it is very important to determine the crystalline phase well, including its chemical composition.…”

Section: Introductionmentioning

confidence: 99%