Bi-Directional Giant Magneto Impedance Sensor
Bi-Directional Giant Magneto Impedance Sensor作者机构：Oregon Episcopal School High School Portland USA
出 版 物：《Advances in Materials Physics and Chemistry》 (材料物理与化学进展（英文）)
年 卷 期：2013年第3卷第5期
页 面：249-254页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：Giant Magneto Impedance Bi-Directional Sensor Permalloy
摘 要：A thin film giant magneto impedance (GMI) based on magnetic field sensor has been developed using electrodeposited Ni-Fe permalloy. Chemical composition, surface morphology, and magnetic properties of Ni-Fe permalloy were char-acterized as a function of plateup parameters, and process conditions were established to deposit a Ni-Fe thin film with a high permeability (~1000) and a low coercivity (0.6 Oersted). Conventional GMI sensors are uni-directional and are several millimeters long. In this work, a spiral-shaped sensor using electroplated Ni-Fe permalloy to detect bi-directional magnetic field is reported. Excellent bi-directional magnetic field sensing has been demonstrated using the 1 mm2 compact double-spiral structure.
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