Magnetoresistance due to domain walls in micron scale Fe wires with stripe domains

• Published in: IEEE transactions on magnetics Vol. 34; no. 4; pp. 900 - 902
• Main Authors: Kent, A.D., Ruediger, U., Yu, J., Zhang, S., Levy, P.M., Zhong, Y., Parkin, S.S.P.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.07.1998; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Giant magnetoresistance; Iron; Magnetic anisotropy; Magnetic domain walls; Magnetic domains; Magnetic properties and materials; Magnetostatics; Magnetotransport phenomena, materials for magnetotransport; Metals. Metallurgy; Microstructure; Perpendicular magnetic anisotropy; Physics; Temperature; Wires; Thin films; Epitaxial layers; Wires; Microfilaments; Transition elements; Magnetic domains; Domain walls; Iron; Experimental study; Magnetoresistance; Magnetic force microscopy; Magnetic properties
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/20.706305

The magnetoresistance (MR) associated with domain boundaries has been investigated in microfabricated bcc Fe (0.65 to 20 /spl mu/m linewidth) wires with controlled stripe domains. Domain configurations have been characterized using MFM. MR measurements as a function of field angle, temperature and domain configuration are used to estimate MR contributions due to resistivity anisotropy and domain walls. Evidence is presented that domain boundaries enhance the conductivity in such microstructures over a broad range of temperatures (1.5 K to 80 K).