|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Advanced Magnetic Materials: An FMD Symposium in Honor of Michael E. McHenry
||Low Cost Soft Magnets for High Temperature Sensing Applications
||Michael Kurniawan, Vladimir Keylin, Ashis Kumar Panda, Rajat Kumar Roy, David Greve, Paul Ohodnicki, Michael McHenry
|On-Site Speaker (Planned)
Using magnetic nanocomposites, Giant MagnetoImpedance (GMI) based sensors have achieved ultrasensitivity as high as 500%/Oe. Recently, we reported the correlation between GMI, magnetization, and anisotropy of the materials and their profiles as functions of temperature. Herein, we include one more aspect that is normally present in magnetic nanocomposites synthesized using rapid solidification technique; internal stress. By monitoring how the magnetic anisotropy changes with temperature, we can determine the stress profile as a function of temperature. We also found that the internal stress is completely relieved after the first heating-cooling cycle. This result mimics repeated operations of GMI based sensors at high temperature and will help in designing sensors with superior predictability and reliability for uses in harsh environment. Lastly, we discuss on an economic analysis on Fe-based and Co-based soft magnetic alloys and present a synthesis route to achieve up to 74% alloy cost reduction.
||Planned: None Selected