| Abstract Scope |
Permanent magnets are essential components in everyday technology and applied in many devices including energy conversion and transportation devices. Since the discovery of rare-earth-based permanent magnets in the 1960s, we have seen great improvement in magnets performance and incredible growth in the production. However, permanent magnets have not been developed in a diversified way. Over past decades, rare-earth-free permanent magnets have played an important role in applications and recent research has shown further potential for development of novel rare-earth-free magnets. In this presentation we will reviews the past and recent advances in rare-earth-free permanent magnets based on 3d transition metals and their alloys with large coercivity. Nanostructured permanent magnetic materials, including exchange-coupled nanocomposite permanent magnets and ferromagnetic nanowires, which are considered as the new types of high-strength permanent magnets, are also discussed.
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