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Materials
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Design, Control and Applications of Permanent Magnet Materials
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Design, Control and Applications of Permanent Magnet Materials

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

Deadline for manuscript submissions: 20 August 2025 | Viewed by 1349

Special Issue Editors

Dr. Haiou Wang

E-Mail Website
Guest Editor
Key Laboratory of Novel Materials for Sensor of Zhejiang Province, Institute of Material Physics, Hangzhou Dianzi University, Hangzhou 310018, China
Interests: magnetic materials; spintronics; thin films and nanotechnology; strain and defect
Special Issues, Collections and Topics in MDPI journals
Dr. Kunpeng Su

E-Mail Website
Guest Editor
Key Laboratory of Novel Materials for Sensor of Zhejiang ProvinceInstitute of Material Physics, Hangzhou Dianzi University, Hangzhou 310018,China
Interests: magnetic materials; spintronics; permanent magnets; phase transition

Special Issue Information

Dear Colleagues,

Research on permanent magnets is essential for advancing technology and industrial applications. Current studies focus on enhancing the properties of these magnets, reducing their size and weight, and exploring novel energy, sensors, and information storage applications. The challenges associated with this technology include enhancing the production processes, addressing material scarcity and recycling, and ensuring its stability and durability in various environments. Despite these obstacles, continuous innovations and endevours are expected to lead to significant breakthroughs in permanent magnet technology.

This Special Issue aims to showcase recent advancements in permanent magnet design, engineering, and applications. By highlighting cutting-edge research and developments, this Special Issue seeks to address the challenges facing permanent magnet technology and drive further innovation in this field. From enhancing the efficiency and stability of permanent magnets to exploring novel applications, the contributions to this Special Issue will demonstrate the potential for significant progress in the realm of permanent magnets.

Dr. Haiou Wang
Dr. Kunpeng Su
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

  • permanent magnet
  • magnetizing properties
  • magnetic science
  • magnetic properties
  • energy transition
  • production process technology
  • technological innovation

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Published Papers (2 papers)

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Research

11 pages, 2475 KiB  
Article
Substitutions in Fe2P Alloys for Permanent Magnet Applications
by Vasilios Panagopoulos, Athanasios Sigalos, Dimitrios I. Anyfantis and Dimitrios Niarchos
Materials 2025, 18(5), 1085; https://doi.org/10.3390/ma18051085 - 28 Feb 2025
Viewed by 410
Abstract
Fe2P (iron phosphide) alloys have garnered significant interest in recent years due to their potential applications in permanent magnet materials, particularly in the context of energy-efficient and environmentally friendly technologies. We have sought to tailor the magnetic properties, such as magnetization, [...] Read more.
Fe2P (iron phosphide) alloys have garnered significant interest in recent years due to their potential applications in permanent magnet materials, particularly in the context of energy-efficient and environmentally friendly technologies. We have sought to tailor the magnetic properties, such as magnetization, coercivity, and Curie temperature, to meet the specific requirements of rare-earth-free permanent magnets for various industrial sectors. In this work, we review recent advancements in the exploration of substitutions (Si, Co, Mn, and Ni) within Fe2P alloys aimed at enhancing their magnetic performance as candidates for permanent magnets. The X-ray patterns of (Fe,Co)2P show great crystallinity with a pure Fe2P phase even with Mn and Ni substitutions. The Fe2P structure crystallizes in the P-62m space group. It has been confirmed that the transition metals substitute the 3g Fe-site, sometimes with adverse effects regarding magnetic properties with Co vs. Ni substitution, and that Si substitutes the 2c P-site. The saturation magnetization increases (MS=87 Am2/kg) with Mn substitution, while the Curie temperature decreases with these substitutions. The impact of various substitutional elements on the magnetic properties of Fe2P alloys is highlighted, and challenges encountered in this field are reported. Full article
(This article belongs to the Special Issue Design, Control and Applications of Permanent Magnet Materials)
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15 pages, 3853 KiB  
Article
Phase Formation Mechanism and Anomalous Magnetic Variation of High-Performance La-Co-Doped Strontium Ferrites
by Pengbo Fu, Zhenhuan Li, Fang Wang, Munan Yang, Lulu Liu, Licheng Wang, Huayang Gong, Jian Zhang and Baogen Shen
Materials 2025, 18(2), 323; https://doi.org/10.3390/ma18020323 - 13 Jan 2025
Viewed by 592
Abstract
La-Co-doped ferrite is widely used due to its excellent magnetic properties, but the mechanisms of La-Co doping on its phase formation and magnetic properties remain unclear. This study clarifies the phase formation mechanisms and reveals that La-Co doping reduces the formation temperatures of [...] Read more.
La-Co-doped ferrite is widely used due to its excellent magnetic properties, but the mechanisms of La-Co doping on its phase formation and magnetic properties remain unclear. This study clarifies the phase formation mechanisms and reveals that La-Co doping reduces the formation temperatures of the intermediate phase SrFeO3−x and thus the final SrFe12O19 phase. This promotes complete formation of SrFe12O19, enhancing saturation magnetization. The unexpected change in coercivity after La-Co doping contradicts the variation in the determined magnetocrystalline anisotropy field. We identify that it arises from the La-Co doping lowering the formation temperature of SrFe12O19, leading to excessive particle growth. Full article
(This article belongs to the Special Issue Design, Control and Applications of Permanent Magnet Materials)
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