| Autor: |
Abe, Satoshi, Akamatsu, Jun, Imaoka, Nobuyoshi |
| Zdroj: |
IEEE Transactions on Magnetics; November 2023, Vol. 59 Issue: 11 p1-5, 5p |
| Abstrakt: |
We investigated the application of Nd2Fe17N3 magnetic powder with planar magnetic anisotropy to magnetic field amplification materials at several tens of megahertz. Consequently, we succeeded in developing a magnetic property with real permeability ~8 and imaginary permeability below 0.8 at 100 MHz using a phosphoric acid coating and a simple heat treatment process in the air. In this study, microstructural analysis conducted using transmission electron microscopy (TEM) and X-ray diffraction (XRD) revealed that the coating layer became thicker, and the Nd2Fe17N3 surface was phase-separated into nano-sized $\alpha $ -Fe phases and Nd-rich phases, either oxide, oxynitride, or nitride. In addition, the nano-sized $\alpha $ -Fe phases and the nano-sized Nd-rich phases were oriented over a wide area spanning several hundred nm. We concluded that these characteristic structures have led to improved properties. |
| Databáze: |
Supplemental Index |
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