Abstract
This paper reports on the magnetic properties of dust cores composed of iron powders produced by the Plasma Rotating Electrode Process (PREP). The PREP powder had larger grain sizes than the gas-atomized powder, and their grain sizes remained large after compaction. Large grain sizes reduce the number of grain boundaries that contribute to pinning sites which hinder domain wall motion. Therefore, the dust cores composed of PREP powders had lower coercive force and lower hysteresis loss than those of the core with the gas-atomized powder. These results demonstrate that PREP powder has superior magnetic properties as a material for the magnetic cores of motors and reactors.
| Original language | English |
|---|---|
| Title of host publication | 2026 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2026 - Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9798331557621 |
| DOIs | |
| State | Published - 2026 |
| Externally published | Yes |
| Event | 2026 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2026 - Manchester, United Kingdom Duration: Apr 13 2026 → Apr 17 2026 |
Publication series
| Name | 2026 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2026 - Proceedings |
|---|
Conference
| Conference | 2026 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2026 |
|---|---|
| Country/Territory | United Kingdom |
| City | Manchester |
| Period | 04/13/26 → 04/17/26 |
Funding
The authors would like to thank Prof. Akihiko Chiba at New Industry Creation Hatchery Center (NICHe), Tohoku University for fabricating the PREP iron powders, and Prof. Shin Saito at Graduate School of Engineering, Tohoku University for cooperating to measure saturation magnetizations. This work was partially supported by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) Program for Creation of Innovative Core Technology for Power Electronics and MEXT Program under Grant JPJ009777; the Data Creation and Utilization-Type Material Research and Development Project (Digital Transformation Initiative Center for Magnetic Materials) under Grant JPMXP1122715503; the Center for Science and Innovation in Spintronics (CSIS) and Center for Innovative Integrated Electronic Systems (CIES), Tohoku University. This work was supported in part by KAKENHI JP25K17634.
Keywords
- dust core
- iron powder
- magnetic properties
- PREP powder
- soft magnetic material
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