TITLE

(Fe,Si,Al)-based nanocrystalline soft magnetic alloys for cryogenic applications

AUTHOR(S)
Daniil, Maria; Osofsky, Michael S.; Gubser, Donald U.; Willard, Matthew A.
PUB. DATE
April 2010
SOURCE
Applied Physics Letters;4/19/2010, Vol. 96 Issue 16, p162504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this work Al and Si are substituted for Fe in a (Fe,Si,Al)–Nb–B–Cu alloy with the goal of improving its magnetic properties at 77 K. The x-ray diffraction patterns for a series of five alloys annealed at 823 K shows a Fe3(Si,Al) ordered phase with some residual amorphous phase. The lowest coercivity at room temperature was observed for the alloy with composition Fe68Si15.5Al3.5Nb3B9Cu1. At cryogenic temperatures, the saturation magnetization of 99.3 A m2/kg, coercivity of 0.45 A/m, and resistivity of 122 μΩ cm for the Fe63Si17.5Al6Nb3B9Cu1 alloy, compare favorably to commercial alloys at 77 K.
ACCESSION #
49807520

 

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