{"title":"Measurements of stray magnetic fields of Co-rich amorphous microwires using a scanning GMI magnetometer","authors":"Yuriy Grebenshchikov , Georgy Danilov , Anastasiya Popova , Sergey Gudoshnikov","doi":"10.1016/j.jmmm.2025.173078","DOIUrl":null,"url":null,"abstract":"<div><div>A magnetoimpedance sensor-based scanning magnetometer was used to measure the distribution of the stray magnetic induction vertical component for segments of amorphous ferromagnetic Co-rich microwires in longitudinal magnetic field of Helmholtz coils in the range of ± 350 A/m. The distribution of the longitudinal magnetization of the tested samples was determined within a variation model. In magnetic fields below the effective anisotropy field, the Co-rich microwires were found to have the longitudinal magnetization proportional to the magnitude of the external magnetic field, and the width of the distributed closing magnetic charges is stable and equal to ∼ 1.8 mm.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"626 ","pages":"Article 173078"},"PeriodicalIF":3.0000,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Magnetism and Magnetic Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0304885325003105","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/4/17 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
A magnetoimpedance sensor-based scanning magnetometer was used to measure the distribution of the stray magnetic induction vertical component for segments of amorphous ferromagnetic Co-rich microwires in longitudinal magnetic field of Helmholtz coils in the range of ± 350 A/m. The distribution of the longitudinal magnetization of the tested samples was determined within a variation model. In magnetic fields below the effective anisotropy field, the Co-rich microwires were found to have the longitudinal magnetization proportional to the magnitude of the external magnetic field, and the width of the distributed closing magnetic charges is stable and equal to ∼ 1.8 mm.
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The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public.
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