Gigantic Ferromagnetic Magneto-Optical Effect in a SiC Light-emitting Diode Fabricated by Dressed-Photon–Phonon-Assisted Annealing
Motoichi Ohtsu, Tadashi Kawazoe
(Submitted on 14 September 2018, Uploaded on 14 September 2018)
keywords: SiC, dressed photon, ferromagnetic, Verdet constant, magneto-optical effect
This paper investigates the gigantic magneto-optical effect in a SiC light-emitting diode fabricated by dressed-photon–phonon (DPP)-assisted annealing. Very large values of the Verdet constant and the Faraday rotation angle were obtained, namely, 660 deg/A and 2480 deg/cm, respectively, at a wavelength of 405 nm. The remanent magnetization was 0.36 mT. The magnetization curve, acquired at 27 °C, exhibited a clear hysteresis characteristic. This behavior of the SiC crystal, equivalent to that of a ferromagnet, was attributed to Al atom pairs autonomously formed as a result of the DPP-assisted annealing.
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