AUTHOR=Li Z. , Yao K. F. , Liu T. C. , Li X. , Wang S. 

TITLE=Effect of Annealing on the Magnetic Properties of FeCoNiCuNbSiB Soft Magnetic Alloys

JOURNAL=Frontiers in Materials

VOLUME=8

YEAR=2022

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2021.805609

DOI=10.3389/fmats.2021.805609

ISSN=2296-8016

ABSTRACT=<p>A series of nanocrystalline soft magnetic alloys with nominal compositions of Fe<sub>66.8-x</sub>Co<sub>10</sub>Ni<sub>x</sub>Cu<sub>0.8</sub>Nb<sub>2.9</sub>Si<sub>11.5</sub>B<sub>8</sub> (x = 1–15 at%) were developed and studied. Effects of annealing on the soft magnetic properties, crystallization behavior, and domain structure were investigated. The alloys with higher Ni content were prone to exhibit stronger magnetic anisotropy. The Fe<sub>66.8</sub>Co<sub>10</sub>Ni<sub>10</sub>Cu<sub>0.8</sub>Nb<sub>2.9</sub>Si<sub>11.5</sub>B<sub>8</sub> alloy exhibited excellent soft magnetic properties, including the low permeability of 2000, low coercivity of about 0.6 A/m, and low remanence of 2.4 mT, together with a temperature gap of 128 K between two crystallization onset temperatures. It has been found that the Ni content and the annealing process possess significant effects on the soft magnetic property of the nanocrystalline alloys. It shows that the developed Fe<sub>66.8</sub>Co<sub>10</sub>Ni<sub>10</sub>Cu<sub>0.8</sub>Nb<sub>2.9</sub>Si<sub>11.5</sub>B<sub>8</sub> nanocrystalline alloy exhibits great potentials for applying in the field of common mode chokes or current transformers, due to its ability to resist the direct current.</p>