Ferromagnetic Fe-Sn nanocrystalline films for flexible Hall sensors

摘要

Detection of magnetic fields is one of the core technologies for ubiquitous sensing. In conventional Hallsensors, a magnetic field is measured as transverse Hall voltage generated by the ordinary Hall effect insemiconductors like Si and GaAs. However, since the sensitivity is proportional to mobility, growth of highlycrystalline films at high temperature is inevitable for the device fabrication. Magnetic materials exhibiting largeanomalous Hall effect (AHE) can potentially allow for further use of Hall sensors by overcoming the limitationsinherent to semiconductors. In this work, we focused on the kagome metal Fe_3Sn_2 as a candidate material.