Open AccessMetal-organic magnets with large coercivity and ordering temperatures up to 242°C
Author(s) -
Panagiota S. Perlepe,
Itziar Oyarzabal,
Aaron Mailman,
Morgane Yquel,
М.С. Платунов,
Iurii Dovgaliuk,
Mathieu Rouzières,
Philippe Négrier,
Denise Mondieig,
Elizaveta A. Suturina,
MarieAnne Dourges,
Sébastien Bonhommeau,
Rebecca A. Musgrave,
Kasper S. Pedersen,
D. Chernyshov,
F. Wilhelm,
А. Рогалев,
Corine Mathonière,
Rodolphe Clérac
Publication year - 2020
Publication title -
science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 12.556
H-Index - 1186
eISSN - 1095-9203
pISSN - 0036-8075
DOI - 10.1126/science.abb3861
Subject(s) - coercivity , magnet , materials science , demagnetizing field , chromium , metal , pyrazine , condensed matter physics , nuclear magnetic resonance , metallurgy , magnetic field , chemistry , physics , magnetization , stereochemistry , quantum mechanics
Lightening the load Permanent magnets are generally produced from solid metals or alloys. Less dense compositions involving lighter elements tend to demagnetize well below room temperature or under modest applied external fields. Perlepeet al. now report that chemical reduction of a low-density chromium-pyrazine network produces a magnet that remains stable above 200°C and resists demagnetization with 7500-oersted coercivity at room temperature. The straightforward synthetic route to the material shows promise for broad exploration of potential applications.Science , this issue p.587
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