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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202304490
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|a pubmed24n1202.xml
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|a (NLM)37562376
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|a DE-627
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|a eng
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|a Zhou, Jing
|e verfasserin
|4 aut
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|a Ultrahigh Permeability at High Frequencies via A Magnetic-Heterogeneous Nanocrystallization Mechanism in an Iron-Based Amorphous Alloy
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|c 2023
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|a Text
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 04.10.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 Wiley-VCH GmbH.
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|a The prevalence of wide-bandgap (WBG) semiconductors allows modern electronic devices to operate at much higher frequencies. However, development of soft magnetic materials with high-frequency properties matching the WBG-based devices remains challenging. Here, a promising nanocrystalline-amorphous composite alloy with a normal composition Fe75.5 Co0.5 Mo0.5 Cu1 Nb1.5 Si13 B8 in atomic percent is reported, which is producible under industrial conditions, and which shows an exceptionally high permeability at high frequencies up to 36 000 at 100 kHz, an increase of 44% compared with commercial FeSiBCuNb nanocrystalline alloy (25 000 ± 2000 at 100 kHz), outperforming all existing nanocrystalline alloy systems and commercial soft magnetic materials. The alloy is obtained by a unique magnetic-heterogeneous nanocrystallization mechanism in an iron-based amorphous alloy, which is different from the traditional strategy of nanocrystallization by doping nonmagnetic elements (e.g., Cu and Nb). The induced magnetic inhomogeneity by adding Co atoms locally promotes the formation of highly ordered structures acting as the nuclei of nanocrystals, and Mo atoms agglomerate around the interfaces of the nanocrystals, inhibiting nanocrystal growth, resulting in an ultrafine nanocrystalline-amorphous dual-phase structure in the alloy. The exceptional soft magnetic properties are shown to be closely related to the low magnetic anisotropy and the unique spin rotation mechanism under alternating magnetic fields
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|a Journal Article
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|a amorphous/nanocrystalline materials
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|a high frequency
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|a high permeability
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|a magnetic domains
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|a nanocrystallization mechanism
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|a Li, Xuesong
|e verfasserin
|4 aut
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|a Hou, Xibei
|e verfasserin
|4 aut
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|a Ke, Haibo
|e verfasserin
|4 aut
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|a Fan, Xingdu
|e verfasserin
|4 aut
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|a Luan, Junhua
|e verfasserin
|4 aut
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|a Peng, Hailong
|e verfasserin
|4 aut
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|a Zeng, Qiaoshi
|e verfasserin
|4 aut
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|a Lou, Hongbo
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|4 aut
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|a Wang, Jianguo
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|4 aut
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|a Liu, Chain Tsuan
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|4 aut
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|a Shen, Baolong
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|a Sun, Baoan
|e verfasserin
|4 aut
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|a Wang, Weihua
|e verfasserin
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| 700 |
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|a Bai, Haiyang
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 40 vom: 24. Okt., Seite e2304490
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:35
|g year:2023
|g number:40
|g day:24
|g month:10
|g pages:e2304490
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|u http://dx.doi.org/10.1002/adma.202304490
|3 Volltext
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