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Chin. Phys. B, 2011, Vol. 20(10): 107502    DOI: 10.1088/1674-1056/20/10/107502
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Magnetization reversal in Fe48Pt34B34 magnetic foils

Gao You-Hui(高有辉)
Department of Physics, Beijing Normal University, Beijing 100875, China
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 (Mr/Ms) of 0.70, saturation magnetization of 10.2 kGs (1 Gs = 10-4 T) and an effective anisotropy Keff =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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