Magnetic force microscopy characterization of heat and current treated Fe40Ni38Mo4B18 amorphous ribbons

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:322

Article

Garcia, Ignacio^2,3  Iturriza, Nuria²  Jose del Val, Juan¹  Grande, Hans²  Pomposo, Jose A.⁴  Gonzalez, Julian¹ 

[1] Univ Basque Country, Fac Chem, Dept Mat Phys, E-20018 Donostia San Sebastian, Spain

[2] CIDETEC, New Mat Dept, E-20009 Donostia San Sebastian, Spain

[3] CIC NanoGUNE Consolider, E-20009 Donostia San Sebastian, Spain

[4] Donostia Int Phys Ctr, San Sebastian 20018, Spain

关键词: MFM;    Amorphous ribbon;    Domain pattern;    Current annealing;   

DOI  :  10.1016/j.jmmm.2009.12.034

来源: Elsevier

【 摘 要 】

The domain structure of a magnetostrictive Fe40Ni38Mo4B18 amorphous ribbon has been studied using magnetic force microscopy (MFM) at room temperature. First, the evolution of the magnetic domain patterns as a function of the annealing temperature has been investigated. In samples heat treated at 250 and 450 degrees C for 1 h, a transformation from 901 to 1801 domain wall has been clearly observed, while the sample heat treated at 700 degrees C for 1 h showed a magnetic phase fixed by the crystalline anisotropy. Additionally, the evolution of the magnetic domain structure by applying a DC current was recorded by the MFM technique. For current annealed samples at 1 A for 1, 30 and 60 min, a transformation between different domain patterns has been observed. Finally, in samples treated by the current annealing method under simultaneous stress, an increase of the annealing time gives rise to a different magnetic structure arising from the development of transverse magnetic anisotropy. (C) 2009 Elsevier B.V. All rights reserved.

【 授权许可】

Free