Magneto-resistance of NiFe nanowire with zigzag shape

• Published in: Journal of magnetism and magnetic materials 2009-08, Vol.321 (15), p.2327-2330
• Main Authors: Manago, Takashi, Kanazawa, Kazuya, Kera, Tatsuya
• Format: Article
• Language: English
• Subjects: Anisotropic magneto-resistance; Anisotropy; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Domain-wall resistance; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures; Electronic transport in multilayers, nanoscale materials and structures; Exact sciences and technology; Intermetallics; Iron compounds; Magnetization; Micromagnetic simulation; Nanostructure; Nanowires; Nickel base alloys; Nickel compounds; NiFe; Physics; Quantum wires; Subdivisions; Wire
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2009.02.048

The anisotropic magneto-resistance (AMR) contributions of a zigzag-shaped NiFe wire were investigated. The magneto-resistance (MR) behaviors in different magnetic-field directions clearly reflect the angular relationships between the directions of the current and magnetic moment in the subdivisions. The resistance in remanence after magnetization along 0° in respect to the longer direction of zigzag was larger than that along 90°. Assumed that the difference appears due to the AMR contribution in the domain wall trapped at the corner, the MR ratio was estimated to be 1.2%, which is in good agreement with the AMR of the NiFe film. We clearly showed that the domain-wall resistance originates in the AMR.