PERLEPE, Panagiota; OYARZABAL, Itziar; MAILMAN, Aaron; YQUEL, Morgane; PLATUNOV, Mikhail; DOVGALIUK, Iurii; ROUZIÈRES, Mathieu; NÉGRIER, Philippe; MONDIEIG, Denise; SUTURINA, Elizaveta; DOURGES, Marie-Anne; BONHOMMEAU, Sébastien; MUSGRAVE, Rebecca; PEDERSEN, Kasper; CHERNYSHOV, Dmitry; WILHELM, Fabrice; ROGALEV, Andrei; MATHONIÈRE, Corine; CLÉRAC, Rodolphe

doi:10.1126/science.abb3861

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PERLEPE, Panagiota
Centre de Recherche Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

OYARZABAL, Itziar
Centre de Recherche Paul Pascal [CRPP]

MAILMAN, Aaron
Department of Chemistry [Jyväskylä Univ] [JYU]

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Science. 2020-10-29, vol. 370, n° 6516, p. 587-592

American Association for the Advancement of Science (AAAS)

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Magnets derived from inorganic materials (e.g., oxides, rare-earth–based, and intermetallic compounds) are key components of modern technological applications. Despite considerable success in a broad range of applications, these inorganic magnets suffer several drawbacks, including energetically expensive fabrication, limited availability of certain constituent elements, high density, and poor scope for chemical tunability. A promising design strategy for next-generation magnets relies on the versatile coordination chemistry of abundant metal ions and inexpensive organic ligands. Following this approach, we report the general, simple, and efficient synthesis of lightweight, molecule-based magnets by postsynthetic reduction of preassembled coordination networks that incorporate chromium metal ions and pyrazine building blocks. The resulting metal-organic ferrimagnets feature critical temperatures up to 242°C and a 7500-oersted room-temperature coercivity.< Réduire

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Metal-organic magnets with large coercivity and ordering temperatures up to 242°C

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