Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 452, Issue -, Pages 442-446Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2017.12.049
Keywords
Nanocrystalline powder cores; Gas atomization; Excellent magnetic properties
Funding
- National Key Research and Development Program of China [2016YFB0300500]
- National Natural Science Foundation of China [51561028, 51671206, 51601205]
- Ningbo Municipal Nature Science Foundation [2017A610036]
- Ningbo International Cooperation Projects [2015D10022]
- Ningbo Major Project for Science and Technology [2014B11012]
- Zhejiang Province Public Technology Research and Industrial Projects [2016C31025]
- Youth Science and Technology Innovation Talents Training Program of Xinjiang Uygur Autonomous Region [gn2015yx005]
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FeSiBPNbCu nanocrystalline powder cores (NPCs) with excellent magnetic properties were fabricated by cold-compaction of the gas-atomized amorphous powder. Upon annealing at the optimum temperature, the NPCs showed excellent magnetic properties, including high initial permeability of 88, high frequency stability up to 1 MHz with a constant value of 85, low core loss of 265 mW/cm(3) at 100 kHz for B-m = 0.05 T, and superior DC-bias permeability of 60% at a bias field of 100 Oe. The excellent magnetic properties of the present NPCs could be attributed to the ultrafine alpha-Fe(Si) phase precipitated in the amorphous matrix and the use of gas-atomized powder coated with a uniform insulation layer. (C) 2017 Elsevier B.V. All rights reserved.
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