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題名: Short-circuiting Effect on the Magnetoresistance of Microstructured Permalloy Rings
作者: Chao, C. T.;Lin, L. K.;Wu, Jong-Ching;Wei, Zung-Hang;Lai, Mei-Feng;Chang, Ching-Ray
貢獻者: 物理學系
關鍵詞: Permalloy ring;Magnetoresistance;Domain wall;Vortex
日期: 2007-03
上傳時間: 2014-06-06T07:18:45Z
出版者: Elsevier
摘要: We present a systematic investigation of the current/voltage lead effect on magnetization reversal of microstructured permalloy rings. The magnetic rings with film thickness of 23 nm and outer/inner diameter of 5/3 μm, respectively, were patched by nonmagnetic gold leads designed with various angles, 10°, 20°, and 30°. Longitudinal magnetoresistance measurement was adopted to demonstrate the short-circuiting effect. The mechanism can be attributed to the formation of the vortex structures developed beneath the lead-covered areas, in which the vortex pair domain configuration was confirmed using a magnetic force microscopy.
關聯: Journal of Magnetism and Magnetic Materials, 310(2) Part3: 1986-1988
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