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Magnetic and Structural Properties of nitrified FINEMET Powders by Using Mechanical Milling Method

Seong Min Hong, Chong Oh Kim, Cheol Gi Kim
2007 Transactions of the Materials Research Society of Japan  

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The magnetic and structural properties of FINEMET [Fen 5 Si 13 . 5 B 9 Nb 3 Cu 1 wt %] amorphous powder were investigated after nitrification and mechanical milling. Fe-based amorphous powder was nitrified and crystallized simultaneously at 550 OC by using ammonia(NH 3 ) gas. Nitrified powder exhibits iron nitride phases such as y'-Fe 4 N, Fe 3 N and a"-Fe 16 N 2 • Nitrified particles were more brittle than raw particles. As a result, nanometer sized nitride powder was fabricated by a high
more » ... etic ball milling method. The saturation magnetization (Ms) and coercivity (He) of nitrified powder were increased due to nitride phases.
doi:10.14723/tmrsj.32.35 fatcat:4rd6orvoyfcfzmcwxfdzfff4jq
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Seong Min Hong, Chong Oh Kim, Cheol Gi Kim. "Magnetic and Structural Properties of nitrified FINEMET Powders by Using Mechanical Milling Method." Transactions of the Materials Research Society of Japan 32.1 (2007) 35-37