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Relationship Between Structure and Magnetic Behaviour in ZnO-Based Systems
Clara Guglieri Rodríguez
出版Springer, 2015-06-03
主題Science / Physics / MagnetismTechnology & Engineering / Materials Science / Thin Films, Surfaces & InterfacesTechnology & Engineering / Materials Science / Electronic MaterialsScience / Physics / Condensed MatterTechnology & Engineering / Electronics / SemiconductorsScience / Physics / ElectricityScience / Physics / Atomic & MolecularTechnology & Engineering / Materials Science / GeneralTechnology & Engineering / Superconductors & Superconductivity
ISBN33191888799783319188874
URLhttp://books.google.com.hk/books?id=R_PLCQAAQBAJ&hl=&source=gbs_api
EBookSAMPLE
註釋This work studies the magnetic behavior of ZnO nanoparticles capped with different organic molecules and showing room-temperature ferromagnetism (RTFM). Of particular significance is the combination of element-specific X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism (XMCD) techniques, which demonstrates the intrinsic occurrence of RTFM in these systems and indicates that it is not related to the 3-D states of the metallic cation but is relayed along the conduction band of the semiconductor. The discovery of room-temperature ferromagnetism (RTFM) in semiconductors holds great promise in future spintronics technologies.
Further results presented here include O K-edge XMCD studies, which demonstrate that the oxygen ions have a ferromagnetic response in these ZnO-based systems, providing the first direct support for claims regarding the appearance of oxygen ferromagnetism in oxide semiconductors at the nanoscale.