Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 691, Issue -, Pages 165-170Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.08.102
Keywords
Toroid cores; Co-precipitation; Magnetic properties; Core loss
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Funding
- national natural science foundation of China [51571087]
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Finemet/Ni-Zn ferrite core-shell particles and toroid core have been synthesized by co-precipitation method combined with following compact pressure and high temperature sintering process. The toroid core were produced from these particles by mold compacting with a compact pressure of 1400 Mpa at room temperature, then sintered at 600 degrees C for 1 h. The SEM results indicated that a layer of ferrite was uniformly coated on the surface of Finemet particles, with the increase of ferrites thickness, the permeability, saturation magnetization and magnetic loss of toroid core decrease, and the toroid core with 5 wt% ferrites shows excellent soft magnetic properties. It exhibits a high permeability of 56, high saturation magnetization of 127.1 emu/g and lower core loss of about 1.51 w/kg at 100 kHz and 50 mT. (C) 2016 Elsevier B.V. All rights reserved.
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