Relationship Between Structure and Magnetic Behaviour in ZnO-Based Systems

• Κύριος συγγραφέας: Guglieri Rodríguez, Clara (Συγγραφέας)
• Συγγραφή απο Οργανισμό/Αρχή: SpringerLink (Online service)
• Μορφή: Ηλεκτρονική πηγή Ηλ. βιβλίο
• Γλώσσα: English
• Έκδοση: Cham : Springer International Publishing : Imprint: Springer, 2015.
• Σειρά: Springer Theses, Recognizing Outstanding Ph.D. Research,
• Θέματα: Physics.; Magnetism.; Magnetic materials.; Semiconductors.; Surfaces (Physics).; Interfaces (Physical sciences).; Thin films.; Quantum computers.; Spintronics.; Materials > Surfaces.; Magnetism, Magnetic Materials.; Surfaces and Interfaces, Thin Films.; Quantum Information Technology, Spintronics.; Surface and Interface Science, Thin Films.
• Φυσική περιγραφή: XIV, 146 p. 104 illus., 52 illus. in color. online resource.
• ISBN: 9783319188874
• ISSN: 2190-5053

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.