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The nanohole-arrayed MnZn ferrite on the PAA/GaN/sapphire multilayer films was investigated for understanding the relation of the superparamagnetic with the photoluminescence. The nanohole MnZn ferrite film acts as a role of lowering superparamagnetic magnetization, and gives a way to excite the energy-exchanged yellow emission, especially at the presence of the sandwiched GaN layer. Without the GaN...
The In-segregation in 7.5-nm Ga1-x'Inx'Ny'As1-y'/GaAs single quantum well (QW) is studied theoretically. The nominal (In, N) contents in the QW are chosen to be (0.35, 0.015) and (039, 0.03) for the emission wavelengths at 1.3 and 1.55 mum, respectively. Muraki's model is used to model the composition profiles in the QWs. In-plane strain, confinement potential, and sub band energy levels of the QW...
GaMnN films with ~3 at. % Mn were grown on 6H SiC (0001) by plasma-assisted molecular beam epitaxy (MBE). The samples were characterized by X-ray diffraction (XRD), photoluminescence (PL), and superconducting quantum interference device (SQUID). The samples exhibited ferromagnetic properties at low temperature. The highest obtained Curie temperature Tc was 56 K. The origin of the ferromagnetic properties...
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