Relationship Between Structure and Magnetic Behaviour in ZnO-Based Systems
Seiten
2015
|
2015
Springer International Publishing (Verlag)
978-3-319-18886-7 (ISBN)
Springer International Publishing (Verlag)
978-3-319-18886-7 (ISBN)
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.
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.
Introduction.- Synthesis and In-House Characterization.- XAS and XMCD Spectroscopies.- Zinc K-Edge X-Ray Absorption Study.- Zinc K-Edge XMCD Study.- Soft X-Ray XAS and XMCD Study.- Summary and Conclusions.- Appendices.- Bibliography.
| Erscheint lt. Verlag | 12.6.2015 |
|---|---|
| Reihe/Serie | Springer Theses |
| Zusatzinfo | XIV, 146 p. 104 illus., 52 illus. in color. |
| Verlagsort | Cham |
| Sprache | englisch |
| Maße | 155 x 235 mm |
| Themenwelt | Naturwissenschaften ► Physik / Astronomie ► Atom- / Kern- / Molekularphysik |
| Naturwissenschaften ► Physik / Astronomie ► Elektrodynamik | |
| Schlagworte | Core-shell structure • magnetic semiconductors • surface magnetism • X-ray absorption spectroscopy • x-ray magnetic circular dichroism • Zinc oxide nanoparticles |
| ISBN-10 | 3-319-18886-0 / 3319188860 |
| ISBN-13 | 978-3-319-18886-7 / 9783319188867 |
| Zustand | Neuware |
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