An Indirect Method of Micromagnetic Structure Estimation in Microwires
| Autor: | Nikolai Andreev, Valeria Kolesnikova, Larissa V. Panina, Iuliia Alekhina, Valeria Rodionova, N. S. Perov, V. V. Rodionov |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Materials science General Chemical Engineering glass-coated microwires 02 engineering and technology 01 natural sciences Article lcsh:Chemistry Condensed Matter::Materials Science micromagnetic structure 0103 physical sciences Range (statistics) Waveform General Materials Science Anisotropy Electrical impedance 010302 applied physics magnetic permeability Condensed matter physics 021001 nanoscience & nanotechnology Amorphous solid Ferromagnetism lcsh:QD1-999 Permeability (electromagnetism) impedance 0210 nano-technology soft magnetic materials |
| Zdroj: | Nanomaterials, Vol 11, Iss 274, p 274 (2021) Nanomaterials Volume 11 Issue 2 |
| ISSN: | 2079-4991 |
| Popis: | The tunable magnetic properties of amorphous ferromagnetic glass-coated microwires make them suitable for a wide range of applications. Accurate knowledge of the micromagnetic structure is highly desirable since it affects almost all magnetic properties. To select an appropriate wire-sample for a specific application, a deeper understanding of the magnetization reversal process is required, because it determines the measurable response (such as induced voltage waveform and its spectrum). However, the experimental observation of micromagnetic structure of micro-scale amorphous objects has strict size limitations. In this work we proposed a novel experimental technique for evaluating the microstructural characteristics of glass-coated microwires. The cross-sectional permeability distribution in the sample was obtained from impedance measurements at different frequencies. This distribution enables estimation of the prevailing anisotropy in the local region of the wire cross-section. The results obtained were compared with the findings of magnetostatic measurements and remanent state analysis. The advantages and limitations of the methods were discussed. |
| Databáze: | OpenAIRE |
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