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An NSF Materials Research Science and Engineering Center (MRSEC)

IRG-2: Double Perovskite Interfaces and Heterostructures. Magnetic Order Emerges from a Disordered Assembly of Ions. Rebecca Ricciardo, Patrick Woodward , Brendan Kennedy.

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An NSF Materials Research Science and Engineering Center (MRSEC)

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  1. IRG-2: Double Perovskite Interfaces and Heterostructures Magnetic Order Emerges from a Disordered Assembly of Ions Rebecca Ricciardo, Patrick Woodward, Brendan Kennedy Ferrimagnetism occurs when magnetic ions on two different crystal sublattices exert opposing but unequal magnetic moments. If the ions from the two sublattices start to mix the resulting disorder usually destroys the ferrimagnetism, and glassy behavior emerges. O Mn CEM researchers have discovered new magnetic properties in Ca2MnRuO6, where the Mn and Ru ions order ferrimagnetically at room temperature, despite the fact that they are randomly distributed in the lattice. Furthermore, through chemical substitution (La3+ for Ca2+) the conductivity can be tuned from metallic to semiconducting while retaining the ferrimagnetism. Understanding this unique behavior may hold important clues for magnetism and half-metallic transport in the broader class of double perovskites. Ru Chem. Mater.19 [26], 6451-6458 An NSF Materials Research Science and Engineering Center (MRSEC) Supported under NSF Award Number DMR-0820414

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