Magnetization reversal in Fe48Pt34B34 magnetic foils

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

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.

Keywords: L1-FePt melt-spun magnetic exchange interaction

Received: 18 April 2011
Revised: 17 May 2011
Accepted manuscript online:

PACS:	75.50.Tt	(Fine-particle systems; nanocrystalline materials)
	75.60.Ej	(Magnetization curves, hysteresis, Barkhausen and related effects)

Cite this article:

Gao You-Hui(高有辉) Magnetization reversal in Fe₄₈Pt₃₄B₃₄ magnetic foils 2011 Chin. Phys. B 20 107502

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Magnetization reversal in Fe₄₈Pt₃₄B₃₄ magnetic foils