Magnetization reversal in Fe48Pt34B34 magnetic foils

doi:10.1088/1674-1056/20/10/107502

中国物理B ›› 2011, Vol. 20 ›› Issue (10): 107502-107502.doi: 10.1088/1674-1056/20/10/107502

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Magnetization reversal in Fe₄₈Pt₃₄B₃₄ magnetic foils

高有辉

Department of Physics, Beijing Normal University, Beijing 100875, China

收稿日期:2011-04-18 修回日期:2011-05-17 出版日期:2011-10-15 发布日期:2011-10-15

Magnetization reversal in Fe₄₈Pt₃₄B₃₄ magnetic foils

Gao You-Hui(高有辉)^†

Department of Physics, Beijing Normal University, Beijing 100875, China

Received:2011-04-18 Revised:2011-05-17 Online:2011-10-15 Published:2011-10-15

摘要/Abstract

摘要： Exchange-spring magnet L1-FePt/(Fe₂B+α-Fe) is fabricated by flash annealing a melt-spun Fe₄₈Pt₃₄B₃₄ foil. A coercivity of 8500 Oe (1 Oe = 79.5775 A/m), squareness (M_r/M_s) of 0.70, saturation magnetization of 10.2 kGs (1 Gs = 10^-4 T) and an effective anisotropy K_eff =2.0 × 10⁷ ergs/cm³ are obtained. A two-step magnetization reversal feature is characterized in this paper. An exchange bias phenomenon is also observed in a low saturation field.

Abstract: Exchange-spring magnet L1-FePt/(Fe₂B+α-Fe) is fabricated by flash annealing a melt-spun Fe₄₈Pt₃₄B₃₄ foil. A coercivity of 8500 Oe (1 Oe = 79.5775 A/m), squareness (M_r/M_s) of 0.70, saturation magnetization of 10.2 kGs (1 Gs = 10^-4 T) and an effective anisotropy K_eff =2.0 × 10⁷ ergs/cm³ are obtained. A two-step magnetization reversal feature is characterized in this paper. An exchange bias phenomenon is also observed in a low saturation field.

Key words: L1-FePt, melt-spun, magnetic exchange interaction

中图分类号: (Fine-particle systems; nanocrystalline materials)

75.50.Tt

75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)

高有辉. Magnetization reversal in Fe₄₈Pt₃₄B₃₄ magnetic foils[J]. 中国物理B, 2011, 20(10): 107502-107502.

Gao You-Hui(高有辉) . Magnetization reversal in Fe₄₈Pt₃₄B₃₄ magnetic foils[J]. Chin. Phys. B, 2011, 20(10): 107502-107502.

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Magnetization reversal in Fe₄₈Pt₃₄B₃₄ magnetic foils

Magnetization reversal in Fe₄₈Pt₃₄B₃₄ magnetic foils

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