Effect of magnetic annealing on magnetostrictive performance of a 〈1 1 0〉 oriented crystal Tb0.3Dy0.7Fe1.95

Tianyu Ma; Changsheng Zhang; Pei Zhang; Mi Yan

doi:10.1016/j.jmmm.2009.12.024

Effect of magnetic annealing on magnetostrictive performance of a 〈1 1 0〉 oriented crystal Tb_0.3Dy_0.7Fe_1.95

Tianyu Ma
, Changsheng Zhang
, Pei Zhang
, Mi Yan

Zhejiang University

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

A 〈1 1 0〉 oriented rod of the alloy Tb_0.3Dy_0.7Fe_1.95 was subjected to a magnetic heat treatment, cooling through its Curie temperature under 240 kA/m. Besides the improved magnetostriction under free conditions, the magnetically annealed rod still exhibited an obvious magnetostriction "jump" effect when subjected to a uniaxial compressive pre-stress. A giant magnetostriction of 2680×10^-6 was achieved under 640 kA/m and 30 MPa, which became 67% larger than before magnetic annealing. The optimum magnetostrictive strain coefficient d₃₃ was also dramatically enhanced. Magnetic force microscopy images show magnetic domain configurations that contribute to the improved magnetostrictive performance. The effect of induced additional anisotropy by magnetic annealing on the improvement of the magnetostriction is also discussed.

Original language	English
Pages (from-to)	1889-1893
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	322
Issue number	14
DOIs	https://doi.org/10.1016/j.jmmm.2009.12.024
State	Published - Jul 2010
Externally published	Yes

Keywords

Anisotropy
Magnetic annealing
Magnetostriction
Tb-Dy-Fe alloy

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10.1016/j.jmmm.2009.12.024

Cite this

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title = "Effect of magnetic annealing on magnetostrictive performance of a 〈1 1 0〉 oriented crystal Tb0.3Dy0.7Fe1.95",

abstract = "A 〈1 1 0〉 oriented rod of the alloy Tb0.3Dy0.7Fe1.95 was subjected to a magnetic heat treatment, cooling through its Curie temperature under 240 kA/m. Besides the improved magnetostriction under free conditions, the magnetically annealed rod still exhibited an obvious magnetostriction {"}jump{"} effect when subjected to a uniaxial compressive pre-stress. A giant magnetostriction of 2680×10-6 was achieved under 640 kA/m and 30 MPa, which became 67\% larger than before magnetic annealing. The optimum magnetostrictive strain coefficient d33 was also dramatically enhanced. Magnetic force microscopy images show magnetic domain configurations that contribute to the improved magnetostrictive performance. The effect of induced additional anisotropy by magnetic annealing on the improvement of the magnetostriction is also discussed.",

keywords = "Anisotropy, Magnetic annealing, Magnetostriction, Tb-Dy-Fe alloy",

author = "Tianyu Ma and Changsheng Zhang and Pei Zhang and Mi Yan",

year = "2010",

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doi = "10.1016/j.jmmm.2009.12.024",

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AU - Ma, Tianyu

AU - Zhang, Changsheng

AU - Zhang, Pei

AU - Yan, Mi

PY - 2010/7

Y1 - 2010/7

N2 - A 〈1 1 0〉 oriented rod of the alloy Tb0.3Dy0.7Fe1.95 was subjected to a magnetic heat treatment, cooling through its Curie temperature under 240 kA/m. Besides the improved magnetostriction under free conditions, the magnetically annealed rod still exhibited an obvious magnetostriction "jump" effect when subjected to a uniaxial compressive pre-stress. A giant magnetostriction of 2680×10-6 was achieved under 640 kA/m and 30 MPa, which became 67% larger than before magnetic annealing. The optimum magnetostrictive strain coefficient d33 was also dramatically enhanced. Magnetic force microscopy images show magnetic domain configurations that contribute to the improved magnetostrictive performance. The effect of induced additional anisotropy by magnetic annealing on the improvement of the magnetostriction is also discussed.

AB - A 〈1 1 0〉 oriented rod of the alloy Tb0.3Dy0.7Fe1.95 was subjected to a magnetic heat treatment, cooling through its Curie temperature under 240 kA/m. Besides the improved magnetostriction under free conditions, the magnetically annealed rod still exhibited an obvious magnetostriction "jump" effect when subjected to a uniaxial compressive pre-stress. A giant magnetostriction of 2680×10-6 was achieved under 640 kA/m and 30 MPa, which became 67% larger than before magnetic annealing. The optimum magnetostrictive strain coefficient d33 was also dramatically enhanced. Magnetic force microscopy images show magnetic domain configurations that contribute to the improved magnetostrictive performance. The effect of induced additional anisotropy by magnetic annealing on the improvement of the magnetostriction is also discussed.

KW - Anisotropy

KW - Magnetic annealing

KW - Magnetostriction

KW - Tb-Dy-Fe alloy

UR - https://www.scopus.com/pages/publications/77950629774

U2 - 10.1016/j.jmmm.2009.12.024

DO - 10.1016/j.jmmm.2009.12.024

M3 - 文章

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SN - 0304-8853

VL - 322

SP - 1889

EP - 1893

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 14

ER -

Effect of magnetic annealing on magnetostrictive performance of a 〈1 1 0〉 oriented crystal Tb_0.3Dy_0.7Fe_1.95

Abstract

Keywords

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