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Synthesis of mesoscopic particles of multi-component rare earth permanent magnet compounds
| Content Provider | Directory of Open Access Journals (DOAJ) |
|---|---|
| Author | T. Thuy Trinh Jungryang Kim Ryota Sato Kenshi Matsumoto Toshiharu Teranishi |
| Abstract | Multielement rare earth (R)–transition metal (T) intermetallics are arguably the next generation of high-performance permanent magnetic materials for future applications in energy-saving and renewable energy technologies. Pseudobinary Sm2Fe17N3 and (R,Zr)(Fe,Co,Ti)12 (R = Nd, Sm) compounds have the highest potential to meet current demands for rare-earth-element-lean permanent magnets (PMs) with ultra-large energy product and operating temperatures up to 200°C. However, the synthesis of these materials, especially in the mesoscopic scale for maximizing the maximum energy product (${\left({BH} \right)_{{\rm{max}}}}$), remains a great challenge. Nonequilibrium processes are apparently used to overcome the phase-stabilization challenge in preparing the R–T intermetallics but have limited control of the material's microstructure. More radical bottom-up nanoparticle approaches based on chemical synthesis have also been explored, owing to their potential to achieve the desired composition, structure, size, and shape. While a great achievement has been made for the Sm2Fe17N3, progress in the synthesis of (R,Zr)(Fe,Co,Ti)12 magnetic mesoscopic particles (MMPs) and R–T/T exchange-coupled nanocomposites (NCMs) with substantial coercivity (${H_{\rm{c}}}$) and remanence (${M_{\rm{r}}})$, respectively, remains marginal. |
| Related Links | http://dx.doi.org/10.1080/14686996.2020.1862630 |
| ISSN | 14686996 |
| e-ISSN | 18785514 |
| DOI | 10.1080/14686996.2020.1862630 |
| Journal | Science and Technology of Advanced Materials |
| Issue Number | 1 |
| Volume Number | 22 |
| Language | English |
| Publisher | Taylor & Francis Group |
| Publisher Date | 2021-01-01 |
| Publisher Place | United Kingdom |
| Access Restriction | Open |
| Subject Keyword | Materials of engineering and construction. Mechanics of materials Biotechnology 102 Porous / Nanoporous / Nanostructured Materials 103 Composites, 106 Metallic Materials 203 Magnetics / Spintronics / Superconductors 301 Chemical Syntheses / Processing |
| Content Type | Text |
| Resource Type | Article |
| Subject | Materials Science |
