Improved magnetostriction of Fe72Ga28 boron doped alloys

In order to investigate the effect of boron additions in the magnetostrictive behavior of Fe72Ga28 alloy, this alloy was doped with 0.5, 1.0, 1.5 and 2.0 at.% of boron. The results have shown that boron additions of 0.5 and 1.0% improve significantly the magnetostriction, the values being about two-...

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Veröffentlicht in:Journal of applied physics 2011-04, Vol.109 (7)
Hauptverfasser: Bormio-Nunes, Cristina, Teodoro dos Santos, Claudio, Fernandes Leandro, Inaê, Sato Turtelli, Reiko, Grössinger, Roland, Atif, Muhammad
Format: Artikel
Sprache:eng
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Zusammenfassung:In order to investigate the effect of boron additions in the magnetostrictive behavior of Fe72Ga28 alloy, this alloy was doped with 0.5, 1.0, 1.5 and 2.0 at.% of boron. The results have shown that boron additions of 0.5 and 1.0% improve significantly the magnetostriction, the values being about two-fold higher compared to the undoped alloy. Microstructural evaluations suggest that boron additions suppress partially the D03 phase ordering, retaining the α-phase. Furthermore, the increase of lattice parameters of the α and D03 phases indicates that boron enters interstitially in the cubic lattice of these phases. Both effects are considered to be responsible for the increased magnetostriction observed in the (Fe0.72Ga0.28)99.5B0.5 and Fe0.72Ga0.28)99.0B1.0 alloys.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3561782