Giant magnetostriction in Tb-doped Fe{sub 83}Ga{sub 17} melt-spun ribbons

Journal Article · Mon Dec 23 04:00:00 EST 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4851216· OSTI ID:22217712

Wu, Wei; Liu, Jinghua; Jiang, Chengbao; Xu, Huibin ^[1]

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1. Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191 (China)

Giant magnetostriction is achieved in lightly Tb-doped Fe{sub 83}Ga{sub 17} melt-spun ribbons. The average perpendicular magnetostriction λ{sub ⊥} is −886 ppm along the melt-spun ribbon direction in the Fe{sub 82.89}Ga{sub 16.88}Tb{sub 0.23} alloy and the calculated parallel magnetostriction λ{sub ‖‖} is 1772 ppm. These values are more than four times as large as those found in binary Fe{sub 83}Ga{sub 17}. The enhanced magnetostriction is attributed to a small amount of Tb entering solution in the A2 matrix phase during rapid solidification. The strong localized magnetocrystalline anisotropy of terbium is thought to cause the giant magnetostriction.

• OSTI ID: 22217712
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 26 Vol. 103; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANISOTROPY
DOPED MATERIALS
FERROMAGNETIC MATERIALS
GALLIUM ALLOYS
IRON ALLOYS
MAGNETOSTRICTION
SOLIDIFICATION
SOLUTIONS
TERBIUM
TERBIUM ALLOYS