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We are reporting a new soft magnetic material with high saturation magnetic flux density, and low magnetic anisotropy. The new material is a compound of iron, nitrogen and carbon, α′-Fe8(NC), which has saturation flux density of 2.8 ± 0.15 T and magnetic anisotropy of 46 kJ m-3. The saturation flux density is 27% higher than pure iron, a widely used soft magnetic material. Soft magnetic materials are very important building blocks of motors, generators, inductors, transformers, sensors and write heads of hard disk. The new material will help in the miniaturization and efficiency increment of the next generation of electronic devices.
Bibliographical noteFunding Information:
We would like to thank Dr Xiaowei Zhang, Prof Bin Ma, Blake Wolf and Xudong Hang for their valuable discussion. This work was partially supported by ARPA-E (Advanced Research Projects Agency-Energy) project under Contract No. 0472-1595. Part of this work was carried out in the College of Science and Engineering Characterization Facility, University of Minnesota, which has received capital equipment funding from the NSF through the UMN MRSEC program under Award Numbers DMR-0819885 and DMR-1420013.
© 2017 IOP Publishing Ltd.
- high saturation flux density
- high saturation magnetization
- magnetic materials
- soft magnetic materials
How much support was provided by MRSEC?
Reporting period for MRSEC
- Period 4