f4c7271299eca12ebbdd4a74395f15d8 nan_a2021m3v11n3p634.pdf c06d22b695429309070a20644257e0e5da5499ff nan_a2021m3v11n3p634.pdf 35981c85b1dd8b3a40b84742f4b296243a0b655d01ea59e87fe4bb8857eecbc1 nan_a2021m3v11n3p634.pdf Title: Efficiency of Magnetostatic Protection Using Nanostructured Permalloy Shielding Coatings Depending on Their Microstructure Subject: The effect of microstructure on the efficiency of shielding or shunting of the magnetic flux by permalloy shields was investigated in the present work. For this purpose, the FeNi shielding coatings with different grain structures were obtained using stationary and pulsed electrodeposition. The coatings’ composition, crystal structure, surface microstructure, magnetic domain structure, and shielding efficiency were studied. It has been shown that coatings with 0.2–0.6 m grains have a disordered domain structure. Consequently, a higher value of the shielding efficiency was achieved, but the working range was too limited. The reason for this is probably the hindered movement of the domain boundaries. Samples with nanosized grains have an ordered two-domain magnetic structure with a permissible partial transition to a superparamagnetic state in regions with a grain size of less than 100 nm. The ordered magnetic structure, the small size of the domain, and the coexistence of ferromagnetic and superparamagnetic regions, although they reduce the maximum value of the shielding efficiency, significantly expand the working range in the nanostructured permalloy shielding coatings. As a result, a dependence between the grain and domain structure and the efficiency of magnetostatic shielding was found. Keywords: permalloy; pulsed electrodeposition; nanostructured coating; microstructure; magnetostatic shielding Author: Tatiana Zubar, Sergey Grabchikov, Anna Kotelnikova, Egor Kaniukov, Maksim Kutuzau, Karin Leistner, Kornelius Nielsch, Tatiana Vershinina, Daria Tishkevich, Oleg Kanafyev, Artem Kozlovskiy, Maxim Zdorovets, Valery Fedosyuk and Alex Trukhanov Creator: LaTeX with hyperref Producer: pdfTeX-1.40.21 CreationDate: Tue Mar 16 10:41:36 2021 CET ModDate: Fri Jun 11 20:45:43 2021 CEST Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 13 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 3507118 bytes Optimized: yes PDF version: 1.7 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- PNCBPL+EURM10 Type 1 Builtin yes yes no 555 0 PKOEQJ+URWPalladioL-Ital Type 1 Custom yes yes no 559 0 EVYOVE+URWPalladioL-Bold Type 1 Custom yes yes no 562 0 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Times New Roman,Bold TrueType WinAnsi no no no 384 0 Times New Roman TrueType WinAnsi no no no 387 0 Times New Roman,Italic TrueType WinAnsi no no no 390 0 ABCDEE+Palatino Linotype,Bold TrueType WinAnsi yes yes no 393 0 ABCDEE+Palatino Linotype TrueType WinAnsi yes yes no 396 0 ABCDEE+Palatino Linotype CID TrueType Identity-H yes yes yes 402 0 Arial TrueType WinAnsi no no no 405 0 Arial,Bold TrueType WinAnsi no no no 408 0 ABCDEE+Arabic Transparent,Bold TrueType WinAnsi yes yes no 411 0 ABCDEE+Arabic Transparent TrueType WinAnsi yes yes no 414 0 Jhove (Rel. 1.22.1, 2019-04-17) Date: 2021-06-12 02:57:15 CEST RepresentationInformation: nan_a2021m3v11n3p634.pdf ReportingModule: PDF-hul, Rel. 1.12.1 (2019-04-17) LastModified: 2021-06-11 21:00:20 CEST Size: 3507118 Format: PDF Version: 1.7 Status: Well-Formed and valid SignatureMatches: PDF-hul MIMEtype: application/pdf Profile: Linearized PDF PDFMetadata: Objects: 0 FreeObjects: 1 IncrementalUpdates: 0 DocumentCatalog: PageLayout: SinglePage PageMode: UseNone Outlines: Item: Title: Introduction Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@1b26f7b2 Item: Title: Materials and Methods Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@491cc5c9 Item: Title: Results and Discussion Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@74ad1f1f Item: Title: Conclusions Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@6a1aab78 Item: Title: References Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@462d5aee Filters: FilterPipeline: FlateDecode Fonts: Type1: Font: BaseFont: EVYOVE+URWPalladioL-Bold FontSubset: true FirstChar: 2 LastChar: 197 FontDescriptor: FontName: EVYOVE+URWPalladioL-Bold Flags: Symbolic FontBBox: -152, -301, 1000, 935 FontFile: true EncodingDictionary: Differences: true Font: BaseFont: LICTPD+URWPalladioL-Roma FontSubset: true FirstChar: 1 LastChar: 246 FontDescriptor: FontName: LICTPD+URWPalladioL-Roma Flags: Symbolic FontBBox: -166, -283, 1021, 943 FontFile: true EncodingDictionary: Differences: true Font: BaseFont: PNCBPL+EURM10 FontSubset: true FirstChar: 11 LastChar: 22 FontDescriptor: FontName: PNCBPL+EURM10 Flags: Symbolic FontBBox: -32, -243, 1060, 720 FontFile: true Font: BaseFont: XQZHNR+PazoMath-Italic FontSubset: true FirstChar: 109 LastChar: 109 FontDescriptor: FontName: XQZHNR+PazoMath-Italic Flags: Symbolic FontBBox: -70, -277, 902, 733 FontFile: true Font: BaseFont: PKOEQJ+URWPalladioL-Ital FontSubset: true FirstChar: 46 LastChar: 121 FontDescriptor: FontName: PKOEQJ+URWPalladioL-Ital Flags: Symbolic FontBBox: -170, -305, 1010, 941 FontFile: true EncodingDictionary: Differences: true Font: BaseFont: XRAKTS+CMSY10 FontSubset: true FirstChar: 0 LastChar: 33 FontDescriptor: FontName: XRAKTS+CMSY10 Flags: Symbolic FontBBox: -29, -960, 1116, 775 FontFile: true XMP: application/pdf Tatiana Zubar, Sergey Grabchikov, Anna Kotelnikova, Egor Kaniukov, Maksim Kutuzau, Karin Leistner, Kornelius Nielsch, Tatiana Vershinina, Daria Tishkevich, Oleg Kanafyev, Artem Kozlovskiy, Maxim Zdorovets, Valery Fedosyuk and Alex Trukhanov The effect of microstructure on the efficiency of shielding or shunting of the magnetic flux by permalloy shields was investigated in the present work. For this purpose, the FeNi shielding coatings with different grain structures were obtained using stationary and pulsed electrodeposition. The coatings’ composition, crystal structure, surface microstructure, magnetic domain structure, and shielding efficiency were studied. It has been shown that coatings with 0.2–0.6 m grains have a disordered domain structure. Consequently, a higher value of the shielding efficiency was achieved, but the working range was too limited. The reason for this is probably the hindered movement of the domain boundaries. Samples with nanosized grains have an ordered two-domain magnetic structure with a permissible partial transition to a superparamagnetic state in regions with a grain size of less than 100 nm. The ordered magnetic structure, the small size of the domain, and the coexistence of ferromagnetic and superparamagnetic regions, although they reduce the maximum value of the shielding efficiency, significantly expand the working range in the nanostructured permalloy shielding coatings. As a result, a dependence between the grain and domain structure and the efficiency of magnetostatic shielding was found. 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