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Descripción
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| Cation ordering in ABO3 perovskites adds to their chemical variety and can lead to properties such as ferrimagnetism and magnetoresistance in Sr2FeMoO6. Through highpressure and high-temperature synthesis, a new type of ?double double perovskite? structure has been discovered in the family MnRMnSbO6 (R=La, Pr, Nd, Sm). This tetragonal structure has a 1:1 order of cations on both A and B sites, with A-site Mn2+ and R3+ cations ordered in columns and Mn2+ and Sb5+ having rock salt order on the B sites. The MnRMnSbO6 double double perovskites are ferrimagnetic at low temperatures with additional spin-reorientation transitions. The ordering direction of ferrimagnetic Mn spins in MnNdMnSbO6 changes from parallel to [001] below TC=76 K to perpendicular below the reorientation transition at 42K at which Nd moments also order. Smaller rare earths lead to conventional monoclinic double perovskites (MnR)MnSbO6 for Eu and Gd. | |
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Internacional
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Si |
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JCR del ISI
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Si |
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Título de la revista
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Angewandte Chemie-International Edition |
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ISSN
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1433-7851 |
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Factor de impacto JCR
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11,709 |
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Información de impacto
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Volumen
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55 |
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DOI
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10.1002/anie.201603526 |
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Número de revista
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Desde la página
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9340 |
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Hasta la página
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9344 |
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Mes
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SIN MES |
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Ranking
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