Improved magnetostriction in Fe 83Ga 17 alloy by tensile-stress annealing treatment

For optimizing the magnetostriction in Fe–Ga alloys, a novel tensile-stress heat-treatment method has been used for textured polycrystalline rods. Utilizing the consistency between the intrinsic magnetocrystalline anisotropy and the shape anisotropy in the textured structure, a large magnetostrictio...

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Bibliographic Details
Published inJournal of alloys and compounds Vol. 469; no. 1; pp. 203 - 206
Main Authors Xu, S.F., Zhang, H.P., Wang, W.Q., Guo, S.H., Zhu, W., Zhang, Y.H., Wang, X.L., Zhao, D.L., Chen, J.L., Wu, G.H.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2009
Subjects
Fe 83Ga 17 alloy
Magnetostriction
Stress annealing
Stress annealing
Magnetostriction
Fe 83Ga 17 alloy
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Summary:For optimizing the magnetostriction in Fe–Ga alloys, a novel tensile-stress heat-treatment method has been used for textured polycrystalline rods. Utilizing the consistency between the intrinsic magnetocrystalline anisotropy and the shape anisotropy in the textured structure, a large magnetostriction up to 200 ppm has been obtained in an alloy with composition Fe 83Ga 17 without application of pre-stress. Such samples also exhibit large pre-stress adjustable magnitude, about 90% for total magnetostriction. Due to the complete alignment of the magnetic moments, a magnetostriction contribution of the bcc (A2) phase can be ruled out and the magnetostrictive behavior of the Fe 3Ga (DO 3) phase has been investigated in detail.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2008.01.076