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Functional Soft Magnetic Materials and Electromagnetic Shielding Technology
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Functional Soft Magnetic Materials and Electromagnetic Shielding Technology

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Materials Physics".

Deadline for manuscript submissions: 20 July 2025 | Viewed by 1356

Special Issue Editors

Dr. Xiujie Fang

E-Mail Website
Guest Editor
School of Instrumentation and Optoelectronics Engineering, Beihang University, Beijing 100191, China
Interests: SERF; atomic quantum precision measurement
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Bangcheng Han

E-Mail Website
Guest Editor
School of Instrumentation and Optoelectronics Engineering, Beihang University, Beijing 100191, China
Interests: quantum precision measurement; sensing technology
Dr. Danyue Ma

E-Mail Website
Guest Editor
Key Laboratory of Ultra-Weak Magnetic Field Measurement Technology, Ministry of Education, School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China
Interests: ultra-sensitive and extremely weak magnetic field sensing and measurement
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Quantum precision measurement technology, as a disruptive innovation, surpasses the measurement limits of traditional methods and holds significant scientific and strategic value. The rapid advancements in quantum precision measurement have created new opportunities for generational leaps in weak measurement, inertial measurement, gravity, and time measurement. Under ideal conditions without external interference, the ultimate sensitivity of various parameters is solely determined by quantum noise. However, in practical measurements, electromagnetic noise imposes limitations, preventing the realization of ultra-high sensitivity. Therefore, there is an urgent need to develop novel soft magnetic materials and breakthrough electromagnetic shielding technologies to support the advancement of quantum technologies and their critical roles in scientific research, industrial production, national defense, and societal applications.

This Special Issue on "Functional Soft Magnetic Materials and Electromagnetic Shielding Technology" aims to provide a comprehensive overview of the current knowledge and implementation levels of electromagnetic shielding materials and applications. Topics of interest include, but are not limited to, composite materials, wave-absorbing materials, ferrite materials, amorphous and nanocrystalline materials, permalloy materials, electromagnetic shielding design, magnetic field regulation, magnetic shielding applications, demagnetization methods for shielding, shielding effectiveness, and theoretical modeling of magnetic noise.

Dr. Xiujie Fang
Prof. Dr. Bangcheng Han
Dr. Danyue Ma
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • composite materials
  • wave-absorbing materials
  • ferrite materials
  • amorphous and nanocrystalline materials
  • permalloy materials
  • electromagnetic shielding design
  • magnetic field regulation
  • demagnetization methods for shielding
  • magnetic shielding applications
  • shielding effectiveness, and magnetic noise

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Published Papers (2 papers)

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Research

8 pages, 3660 KiB  
Communication
Role of Minor Ta Substitution on Thermal Behavior and Soft Magnetic Properties of Co-Fe-Mo-Si-B Metallic Glass Ribbon
by Peipei Shen, Yanan Gao, Shuyan Zhang, Hua Chen, Pengfei Wang, Yangzhi Xue, Hongbo Zhou, Danyue Ma and Jixi Lu
Materials 2025, 18(8), 1828; https://doi.org/10.3390/ma18081828 - 16 Apr 2025
Viewed by 283
Abstract
Cobalt-based metallic glasses have sparked intensive attention because of their extraordinary properties. In this work, a series of Co66Fe4Mo2-xTaxSi16B12 (x = 0, 0.5, 1.0, 1.5, 2.0) metallic glass ribbons were [...] Read more.
Cobalt-based metallic glasses have sparked intensive attention because of their extraordinary properties. In this work, a series of Co66Fe4Mo2-xTaxSi16B12 (x = 0, 0.5, 1.0, 1.5, 2.0) metallic glass ribbons were systematically designed to investigate the influence of the minor Ta substitution for Mo on the thermal behavior and magnetic performance. The results reveal that the width of the supercooled liquid region initially increases with Ta content, reaching 98 K at x = 1.0, and subsequently decreases with further Ta addition. It indicates that the Co66Fe4Mo1.0Ta1.0Si16B12 alloy has the optimal glass-forming ability. Moreover, the crystallization onset temperature and crystallization peak temperature of all as-quenched ribbons were improved with the Ta content x increasing to 2.0, which is due to the higher melting temperature of the element Ta (3290 K). In addition, these ribbons exhibit outstanding soft magnetic properties, including ultralow coercivity (Hc < 1.1 A/m) and moderate saturation magnetization, which indicates that these ribbons are suitable for magnetic shielding. These results offer valuable insights into the design of soft magnetic metallic glass. Full article
(This article belongs to the Special Issue Functional Soft Magnetic Materials and Electromagnetic Shielding Technology)
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19 pages, 9311 KiB  
Article
B-H Curve Estimation and Air Gap Optimization for High-Performance Split Core
by Minjoong Kim, Myungseo Lee, Sijeong Lee, Jaeyun Lee and Jihwan Song
Materials 2025, 18(3), 644; https://doi.org/10.3390/ma18030644 - 31 Jan 2025
Viewed by 866
Abstract
The current transformer (CT)-based energy harvesting method has gained considerable attention for low-power devices. Accurate estimation of the B-H curve is essential to develop a high-performance CT, as it closely relates to the electromagnetic behavior of CT material. However, the existing estimation methods [...] Read more.
The current transformer (CT)-based energy harvesting method has gained considerable attention for low-power devices. Accurate estimation of the B-H curve is essential to develop a high-performance CT, as it closely relates to the electromagnetic behavior of CT material. However, the existing estimation methods for the B-H curve face several drawbacks, which include process complexity and a high cost. This study presented an intuitive method to estimate the B-H curve based on the experimentally obtained resistance-voltage data. The performance of the CT core is obtained based on the estimated B-H curve, which exhibited an error of only 2.6% when compared to the experimental results for the most accurate case. Additionally, we analyzed split-core performance deterioration caused by the presence of an air gap. The air gap formation of the split core was closely related to the surface roughness, which significantly influenced core performance. The air gap range that minimizes the reduction in performance is predicted and validated through simulations and experiments. This research highlights a straightforward approach to obtaining the B-H curve of magnetic CT core material. We believe that this study provides the design guidelines needed to develop a high-performance CT core, including considerations for core geometry and the recommended air gap range. Full article
(This article belongs to the Special Issue Functional Soft Magnetic Materials and Electromagnetic Shielding Technology)
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