Publications

A rapid heat treatment for nanocrystallization of amorphous Fe<sub>75.1</sub>Cu<sub>1</sub>Nb<sub>1.5</sub>Si<sub>15.5</sub>B<sub>6.9</sub> and Fe<sub>83</sub>Cu<sub>1</sub>Nb<sub>4</sub>B<sub>12</sub> tape wound cores

Author(s)
Niklas Plutta, Florian Spieckermann, Christian Polak, Mie Marsilius, Michael Zehetbauer, Jürgen Eckert
Abstract

A rapid annealing technique for soft magnetic Fe75.1Cu1Nb1.5Si15.5B6.9 and Fe83Cu1Nb4B12 tape wound cores is presented. Its effectiveness for creating a fine-grained nanocrystalline structure is demonstrated by measurements of the magnetic hysteresis loops as well as by structural investigations done by X-ray diffraction. The results show that the technique reduces the average crystallite sizes from about 27 nm to 17 nm for Fe75.1Cu1Nb1.5Si15.5B6.9, and from about 52 nm to 15 nm for Fe83Cu1Nb4B12. The coercivity after the rapid annealing is about three times lower for the Fe75.1Cu1Nb1.5Si15.5B6.9 alloy and up to one order of magnitude lower for the Fe83Cu1Nb4B12 alloy compared to the coercivity after the standardized long-time heat treatment. The improved heat treatment is outstanding in the way that it produces better soft magnetic properties in high-performance alloy cores within much shorter time than the standard core heat treatments.

Organisation(s)
Dynamics of Condensed Systems
External organisation(s)
Montanuniversität Leoben, Österreichische Akademie der Wissenschaften (ÖAW), Vacuumschmelze GmbH
Journal
Journal of Magnetism and Magnetic Materials
Volume
592
No. of pages
6
ISSN
0304-8853
DOI
https://doi.org/10.1016/j.jmmm.2024.171797
Publication date
02-2024
Peer reviewed
Yes
Austrian Fields of Science 2012
210004 Nanomaterials, 103017 Magnetism
Keywords
ASJC Scopus subject areas
Electronic, Optical and Magnetic Materials, Condensed Matter Physics
Portal url
https://ucris.univie.ac.at/portal/en/publications/a-rapid-heat-treatment-for-nanocrystallization-of-amorphous-fe751cu1nb15si155b69-and-fe83cu1nb4b12-tape-wound-cores(bc051264-08bd-4e18-abac-48cc3e99bff9).html