Order-disorder transition and magnetic properties of Fe-6.5Si alloy powder cores

• Published in: Physica status solidi. A, Applications and materials science Vol. 204; no. 12; pp. 4108 - 4112
• Main Authors: Jang, Pyungwoo, Lee, Bonghan, Choi, Gwangbo
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Berlin WILEY-VCH Verlag 01-12-2007; WILEY‐VCH Verlag; Wiley-VCH
• Subjects: 75.30.Kz; 75.47.Np; 75.50.Bb; 81.40.Rs; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Domain effects, magnetization curves, and hysteresis; Domain walls and domain structure; Exact sciences and technology; Fe and its alloys; Magnetic properties and materials; Physics; Studies of specific magnetic materials; Order-disorder transformations; Annealing; Silicon alloys; Electrical conductivity; Magnetostriction; Powder compaction; Magnetic hysteresis; Iron alloys; Oxidation; Eddy current losses; Magnetic properties
• ISSN: 1862-6300; 1862-6319
• DOI: 10.1002/pssa.200777121

Magnetic properties of Fe‐6.5%Si powder compact cores were analyzed when cores were annealed at 400 – 800 °C for up to 960 min. Hysteresis losses were larger than eddy current lossed in all cores. With increasing annealing temperature core loss decreased while eddy current loss showed minimum when annealed at 500 °C. Variation of DC and AC magnetic properties with annealing temperature and time could be successfully explained by order‐disorder transition, magnetostriction, resistivity, lubricant burn‐off, and surface oxidation of particles. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)