Efficiency of Magnetostatic Protection Using Nanostructured Permalloy Shielding Coatings Depending on Their Microstructure
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 coati...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/3/634 |
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| 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 Alex Trukhanov |
| author_facet | 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 Alex Trukhanov |
| author_sort | Tatiana Zubar |
| collection | DOAJ |
| description | 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 µm 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. |
| first_indexed | 2024-03-09T05:36:35Z |
| format | Article |
| id | doaj.art-4ee3e030227c48a0a837226dd8ccfee9 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T05:36:35Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-4ee3e030227c48a0a837226dd8ccfee92023-12-03T12:27:55ZengMDPI AGNanomaterials2079-49912021-03-0111363410.3390/nano11030634Efficiency of Magnetostatic Protection Using Nanostructured Permalloy Shielding Coatings Depending on Their MicrostructureTatiana Zubar0Sergey Grabchikov1Anna Kotelnikova2Egor Kaniukov3Maksim Kutuzau4Karin Leistner5Kornelius Nielsch6Tatiana Vershinina7Daria Tishkevich8Oleg Kanafyev9Artem Kozlovskiy10Maxim Zdorovets11Valery Fedosyuk12Alex Trukhanov13Laboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, 220072 Minsk, BelarusLaboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, 220072 Minsk, BelarusLaboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, 220072 Minsk, BelarusDepartment of Technology of Electronics Materials, National University of Science and Technology MISiS, 119049 Moscow, RussiaLeibniz IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, GermanyLeibniz IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, GermanyLeibniz IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, GermanyJoint Institute for Nuclear Research, 141980 Dubna, RussiaLaboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, 220072 Minsk, BelarusLaboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, 220072 Minsk, BelarusThe Institute of Nuclear Physics, Almaty 050032, KazakhstanThe Institute of Nuclear Physics, Almaty 050032, KazakhstanLaboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, 220072 Minsk, BelarusLaboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, 220072 Minsk, BelarusThe 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 µm 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.https://www.mdpi.com/2079-4991/11/3/634permalloypulsed electrodepositionnanostructured coatingmicrostructuremagnetostatic shielding |
| spellingShingle | 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 Alex Trukhanov Efficiency of Magnetostatic Protection Using Nanostructured Permalloy Shielding Coatings Depending on Their Microstructure Nanomaterials permalloy pulsed electrodeposition nanostructured coating microstructure magnetostatic shielding |
| title | Efficiency of Magnetostatic Protection Using Nanostructured Permalloy Shielding Coatings Depending on Their Microstructure |
| title_full | Efficiency of Magnetostatic Protection Using Nanostructured Permalloy Shielding Coatings Depending on Their Microstructure |
| title_fullStr | Efficiency of Magnetostatic Protection Using Nanostructured Permalloy Shielding Coatings Depending on Their Microstructure |
| title_full_unstemmed | Efficiency of Magnetostatic Protection Using Nanostructured Permalloy Shielding Coatings Depending on Their Microstructure |
| title_short | Efficiency of Magnetostatic Protection Using Nanostructured Permalloy Shielding Coatings Depending on Their Microstructure |
| title_sort | efficiency of magnetostatic protection using nanostructured permalloy shielding coatings depending on their microstructure |
| topic | permalloy pulsed electrodeposition nanostructured coating microstructure magnetostatic shielding |
| url | https://www.mdpi.com/2079-4991/11/3/634 |
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