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Home > Issues > RetrieveMagnetostrictive and Magnetic Properties of Tb0.29Dy0.48Ho0.23Fe1.9 Fiber/Epoxy Composites
Journal of Magnetics, Volume 23, Number 2, 30 Jun 2018, Pages 280-284
Ran Zhao * 
(School of Electrical Engineering, Hebei University of Technology), Bowen Wang (School of Electrical Engineering, Hebei University of Technology), Shuying Cao (School of Electrical Engineering, Hebei University of Technology), Wenmei Huang (School of Electrical Engineering, Hebei University of Technology), Quanguo Lu (Jiangxi Province Key Laboratory of Precision Drive & Control, Nanchang Institute of Technology), Jianwu Yan (Jiangxi Province Key Laboratory of Precision Drive & Control, Nanchang Institute of Technology)
(School of Electrical Engineering, Hebei University of Technology), Bowen Wang (School of Electrical Engineering, Hebei University of Technology), Shuying Cao (School of Electrical Engineering, Hebei University of Technology), Wenmei Huang (School of Electrical Engineering, Hebei University of Technology), Quanguo Lu (Jiangxi Province Key Laboratory of Precision Drive & Control, Nanchang Institute of Technology), Jianwu Yan (Jiangxi Province Key Laboratory of Precision Drive & Control, Nanchang Institute of Technology)
Abstract
In this paper, we fabricated novel magnetostrictive composites by embedding <110>-oriented Tb-Dy-Ho-Fe fibers in an epoxy matrix. The magnetostrictive and magnetic properties (magnetostriction, magnetization,
piezomagnetic coefficient and relative permeability) of the proposed composites were measured, analyzed, and compared to those of Tb0.29Dy0.48Ho0.23Fe1.9 alloy and Tb0.3Dy0.7Fe2 continuous-fiber/epoxy composites. Tb0.29Dy0.48Ho0.23Fe1.9 continuous-fiber/epoxy composites have a saturation magnetostriction (λs) of 840 ppm and saturation magnetization (Ms) of 0.75 T. Their piezomagnetic coefficient exhibits a maximum value (8.2 μm/kA) at 19 kA/m. These proposed composites exhibit a large magnetostriction in high magnetic fields (> 400 kA/m) and a large relative permeability in low magnetic fields (< 100 kA/m). This result indicates that the given composites perform better than the Tb0.29Dy0.48Ho0.23Fe1.9 alloy and Tb0.3Dy0.7Fe2 fiber/epoxy composites. Thus, the composites with characteristics of high sensitivity and large magnetostriction can be used in the field of ultrasonic sensing.
piezomagnetic coefficient and relative permeability) of the proposed composites were measured, analyzed, and compared to those of Tb0.29Dy0.48Ho0.23Fe1.9 alloy and Tb0.3Dy0.7Fe2 continuous-fiber/epoxy composites. Tb0.29Dy0.48Ho0.23Fe1.9 continuous-fiber/epoxy composites have a saturation magnetostriction (λs) of 840 ppm and saturation magnetization (Ms) of 0.75 T. Their piezomagnetic coefficient exhibits a maximum value (8.2 μm/kA) at 19 kA/m. These proposed composites exhibit a large magnetostriction in high magnetic fields (> 400 kA/m) and a large relative permeability in low magnetic fields (< 100 kA/m). This result indicates that the given composites perform better than the Tb0.29Dy0.48Ho0.23Fe1.9 alloy and Tb0.3Dy0.7Fe2 fiber/epoxy composites. Thus, the composites with characteristics of high sensitivity and large magnetostriction can be used in the field of ultrasonic sensing.
Keywords: magnetostrictive composites; Tb-Dy-Ho-Fe alloy; epoxy; fiber
DOI: https://doi.org/10.4283/JMAG.2018.23.2.280
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