Title :
Temperature characteristics of a fluxgate current sensor with Fe-Ni-Co ring core
Author :
Watanabe, Y. ; Otsubo, M. ; Yanai, T. ; Nakano, M. ; Fukunaga, H.
Author_Institution :
Nagasaki Univ., Nagasaki, Japan
Abstract :
Fluxgate sensors are widely used in many facilities as a current sensor with high sensitivity, and a Co-based amorphous ribbon or an Fe-Ni-based alloy is commonly used as a core material for them. Although the sensors using these materials have high sensitivity, the temperature variation of the sensitivity is large due to their low Curie temperatures (200-400 °C) [1-3]. Therefore, development of fluxgate current sensors with high robustness against the variation of temperature is required, and we focused on soft magnetic Fe-Ni-Co alloys with high Curie temperature. In this study, we fabricated a fluxgate current sensor with Fe-Ni-Co ring core, and evaluated the effect of temperature on the sensitivity.
Keywords :
Curie temperature; cobalt alloys; eddy current losses; iron alloys; magnetic sensors; nickel alloys; soft magnetic materials; Co-based amorphous ribbon; Curie temperature; Fe-Ni-based alloy; FeNiCo; core material; fluxgate current sensor; ring core; soft magnetic alloys; temperature characteristics; temperature variation; Films; Magnetic cores; Sensitivity; Temperature; Temperature measurement; Temperature sensors; Thermal stability;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7156764
