Advances in Heavy-Rare-Earth-Free or Lean Permanent Magnets
A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Inorganic Crystalline Materials".
Deadline for manuscript submissions: 27 February 2025 | Viewed by 60
Special Issue Editors
Interests: permanent magnets; copper–graphene composite; nanotwinned material
Interests: first-principles calculations; magnetic materials; permanent magnets; density functional theory
Special Issue Information
Dear Colleagues,
Permanent magnets are the key components in high-performance motors and generators used for energy conversion, consumer electronics, medical devices, data storage, and magnetic sensors. NdFeB magnets have the largest market share among permanent magnets as they are a high-energy product. NdFeB magnets manufactured using the sintering method require the addition of proper amounts of heavy rare earth elements to improve their coercivity for operation under high-temperature conditions (e.g., 120–200 °C for typical electric motor applications). However, heavy rare earth elements have lean abundance, high cost, and supply chain risk. The increasing demand for permanent magnets in both quantity and quality calls for alternatives to the sintered NdFeB magnets doped with heavy rare earth elements.
First-principles computations have become a powerful tool for predicting critical magnetic properties, including the Curie temperature, saturation magnetization, and magnetic anisotropy, which are essential for validating coercivity. The integration of experimental methods with computational techniques will help us to accelerate the discovery of permanent magnets that meet specific requirements.
Both experimental and computational studies on the advances in NdFeB magnets fabricated by novel methods or other magnet systems free of or lean for heavy rare earth elements are welcome in this Special Issue.
Dr. Chaochao Pan
Dr. Tao Jiang
Dr. Baozhi Cui
Guest Editors
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Keywords
- permanent magnets
- NdFeB magnets
- heavy-rare-earth-free or lean
- magnetic properties
- critical materials
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