- Synthesis of Eu3+ Doped (Y,Gd)BO3 Powder by Mechanochemical Process
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Hee-Sub Won, Wan-Jae Lee, Je-Seok Kim, Gun-Young Hong, Kun-Jae Lee, Yong-Ho Choa
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J Korean Powder Metall Inst. 2008;15(2):136-141.
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DOI: https://doi.org/10.4150/KPMI.2008.15.2.136
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- The mechanochemical process were employed to prepare the red phosphors (Y,Gd)BO_3:Eu3+. The main factors affecting particle size, particle distribution, and luminescent properties of the product were investigated in details. Particles sized around 200-600 nm are formed after intensive milling. The phosphors were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and photoluminescence spectrum. Results revealed that phosphors with different morphology, small particle size and high luminescence intensity could be obtained by mechanochemical process.
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Citations to this article as recorded by  - Photoluminescence Properties of Green Phosphor Y1-xBO3:Tbx3+Synthesized by Solid-state Reaction Method
Shin-Ho Cho
Journal of the Korean Institute of Electrical and Electronic Material Engineers.2011; 24(8): 659. CrossRef
- Synthesis of Ultra Eine MnxZn1-xFe2O4(x = 0.69~0.74) Powder and Its Magnetic Properties
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Jae-Eun Kwak, Wan-Jae Lee
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J Korean Powder Metall Inst. 2002;9(6):449-454.
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DOI: https://doi.org/10.4150/KPMI.2002.9.6.449
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Abstract
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- MnxZn_1-xFe_2O_4 (x=0.69~0.74) powders synthesized by the thermal decomposition of organic acid salts. The obtained powders were uniform in composition and ultra-fine particle with about 400 nm. The amount of spinel phase of these powders was about 50% in X-ray diffraction patterns. The calcination of powder was carried out at 900°C for 2 hours in air. After the powders were calcined. the mean size of powder was about 500 nm and the amount of spinel phase was increased over about 65%. The maximum amount of spinel phase was about 75% in the specimen of X=0.72. The magnetic properties of calcined Mn_0.72Zn_0.28Fe_2O_4 powders were the best among the different among the different compositions.
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