Direct observation of giant Barkhausen jumps in magnetic microwires

作者：Chizhik A^*; Stupakiewicz A; Maziewski A; Zhukov A; Gonzalez J; Blanco J M

来源：Applied Physics Letters, 2010, 97(1): 012502.

DOI：10.1063/1.3460292

• Barkhausen effect
• boron alloys
• cobalt alloys
• iron alloys
• Kerr magneto-optical effect
• magnetic domains
• magnetisation reversal
• molybdenum alloys
• nickel alloys
• nucleation
• silicon alloys
• surface magnetism
• wires

Magnetization reversal induced by a circular magnetic field has been studied using the magneto-optical Kerr effect in magnetic microwires. The visualization of the classical effect of a giant Barkhausen jump is reported in a magnetic microwire. It was directly confirmed that the surface giant Barkhausen jump consists of the nucleation of a single circular domain followed by the long distance quick motion of the solitary circular domain walls.

• 出版日期2010-7-5