Minnealloy: A new magnetic material with high saturation flux density and low magnetic anisotropy

Md Mehedi, Yanfeng Jiang, Pranav Kumar Suri, David J. Flannigan, Jian Ping Wang

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


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.

Original languageEnglish (US)
Article number37LT01
JournalJournal of Physics D: Applied Physics
Issue number37
StatePublished - Aug 22 2017

Bibliographical note

Funding 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.

Publisher Copyright:
© 2017 IOP Publishing Ltd.


  • high saturation flux density
  • high saturation magnetization
  • magnetic materials
  • minnealloy
  • soft magnetic materials

How much support was provided by MRSEC?

  • Shared

Reporting period for MRSEC

  • Period 4


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