Effect of Al substitution on the magnetic properties of amorphous Fe73.5Cu1Mo3Si13.5−xAlxB9 alloy

Effects of chemical composition on nanocrystallization kinetics, microstructure and magnetic properties of finemet-type amorphous alloys

“…The experimental diffraction peaks around 45° were fitted with two different pseudo-Voigt functions in order to separate the contributions of the amorphous and crystalline phase. The crystalline fraction was obtained from the ratio of the integral intensity of the crystalline contribution to the total integral intensity: (1) where I cryst and I am are the integral intensities of the crystalline and amorphous phases, respectively [30].…”

“…Nanocrystalline alloys obtained by devitrification of Fe-based amorphous precursors have been extensively studied due to their excellent soft magnetic properties [1][2][3][4][5]. Among these nanocrystalline materials, Finemet (FeSiBNbCu) alloy [6] exhibit ultrasoft magnetic properties, which are ideal for applications such as transformer cores, choke coils and EMI filters [1][2]. After suitable heat treatment, ultrafine magnetic bcc Fe(Si) nanograins form within the amorphous matrix.…”

Variation of permeability of Nb-poor Finemet under different field amplitudes

“…Experiments of using other elements to take the place of Nb were performed, showing that the effect is not good [3][4][5]. Additionally, Al was also used to substitute Fe or Si to achieve different magnetic properties [6,7], but little literature on the substitution of Al for Nb has been found.…”

Variation in Permeability of Nb-Poor Finemet Under Heating Annealing

“…Meanwhile, some studies on partial substitution of Fe or Si by Al and the influences on the coercivity, the saturation magnetization and the Curie temperature had been reported. [5][6] However, there is very little study about the substitution of Nb by Al. The attempt has been in our former study and which indicates the permeability can be improved by this substitution under isothermally annealing process.…”