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Dilute-defect magnetism: Origin of magnetism in nanocrystalline CeO_2

机译:稀缺陷磁性:纳米CeO_2中磁性的起源

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摘要

We investigate experimentally and theoretically the origin of magnetism in nanocrystalline-undoped ceria films. Our results are consistent with density-functional calculations showing that both oxygen and cerium vacancies lead to ferromagnetism. Although the number of cerium vacancies is smaller than that of oxygen vacancies, the relatively high magnetic moment of the former might result in a substantial contribution to the magnetic properties. Diluted defect magnetism is suggested as a universal feature of ferromagnetism in nonmagnetic oxides without magnetic impurities.
机译:我们在实验和理论上研究了纳米晶无掺杂二氧化铈薄膜中磁性的起源。我们的结果与密度函数计算结果一致,该计算结果表明氧和铈的空位都导致铁磁性。尽管铈空位的数量少于氧空位的数量,但是前者的相对较高的磁矩可能导致对磁性能的重大贡献。稀释的缺陷磁性被认为是无磁性杂质的非磁性氧化物中铁磁性的普遍特征。

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