Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 324, Issue 11, Pages 1897-1901Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2012.01.019
Keywords
Amorphous alloy; Nanocrystalline; Magnetic susceptibility; Induction heating; Hyperthermia
Funding
- MET-NANO (POCTEFA) [EFA17/08]
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In this work the thermal effects of magnetic induction heating in (FeCr)(73.5)Si13.5Cu1B9Nb3 amorphous and nanocrystalline wires were analyzed. A single piece of wire was immersed in a glass capillary filled with water and subjected to an ac magnetic field (frequency, 320 kHz). The initial temperature rise enabled the determination of the effective Specific Absorption Rate (SAR). Maximum SAR values are achieved for those samples displaying high magnetic susceptibility, where the eddy current losses dominate the induction heating behavior. Moreover, the amorphous sample with Curie temperature around room temperature displays characteristic features of self-regulated hyperthermia. (C) 2012 Elsevier B.V. All rights reserved.
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