Magneto-optical properties of Co coated ZnO nanorods

0471066 - FZÚ 2017 RIV CZ eng A - Abstrakt
Hsu, H.S. - Sun, S. J. - Chou, H. - Remeš, Zdeněk
Magneto-optical properties of Co coated ZnO nanorods.
Development of Materials Science in Research and Education. Book of Abstracts of the 26th Joint Seminar. Praha: Institute of Physics of the Czech Academy of Sciences, v. v. i., 2016 - (Kožíšek, Z.; Král, R.; Zemenová, P.). s. 22. ISBN 978-80-905962-4-5.
[Joint Seminar Development of Materials Science in Research and Education /26./. 29.08.2016-02.09.2016, Pavlov]
Grant ostatní: AV ČR(CZ) MOST-15-04
Program: Bilaterální spolupráce
Institucionální podpora: RVO:68378271
Klíčová slova: ZnO * nanorods * magnetooptical properties
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus

ZnO NRs array were fabricated by electro-chemical deposition. After electro-chemical deposition, Co layers were coated on the ZnO NRs array also using sputtering. As the Co capping, band tailing becomes evident in the data with the onset of absorption at lower energy.
The absorption at low energy in Co capped films may indicate the Co derived states near the band edge 3.4eV. A sizeable magnetoabsorption change can be observed after the band tail at room temperature under magnetic field∼ 0.8 T. A ferromagnetic interfacial spin-polarized semiconductor band of Co-coated ZnO NRs is also observed by measuring magnetic circular dichroism effect. A phenomenological model related to magnetic field-dependent spin
splitting band structures near the Co/ZnO interfaces due to charge transfer between the Co d orbit and the defect-related band has been proposed to describe the observed magneto-optical properties.
Trvalý link: http://hdl.handle.net/11104/0269085