Hydrothermal Synthesis, Photoluminescence and Room Temperature Ferromagnetism of Co-Doped Rod-Like ZnO Particles

Abstract:

Co-doped rod-like ZnO particles with nominal Co doping concentration of 1 at% were synthesized by hydrothermal method and characterized by X-ray diffraction, field-emission scanning electron microscopy, photoluminescence and superconducting quantum interference device. The results show that the as-synthesized samples are pure hexagonal wurtzite structure without metallic Co or other secondary phases and display rod-like shape with smooth surface. The room temperature PL spectrum of the Co-doped rod-like ZnO particles exhibits a strong blue emission at 440 nm, a shoulder violet emission at 410 nm and a weak green emission centered at 550 nm. The magnetization measurements reveal that the Co-doped rod-like ZnO particles show ferromagnetic behavior at room temperature. The saturation magnetization and coercive field are 0.0125 emu/g and 45 Oe, respectively.

• Periodical: Applied Mechanics and Materials (Volumes 633-634)
• Pages: 292-295
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.633-634.292
• Online since: September 2014
• Authors: Lian Mao Hang*, Zhi Yong Zhang
• Keywords: Ferromagnetism, Hydrothermal, Photoluminescence (PL), ZNO

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