Synthesis and characterization of rhombic dodecahedral YAG microcrystals with good dispersity, high crystallinity and controllable crystal size

By exploring the optimal reaction temperature and the ratio of Na 2 SO 4 to the precursor, highly symmetrical rhombic dodecahedral yttrium aluminum garnet (Y 3 Al 5 O 12 , YAG) microcrystals with a good dispersity were successfully prepared using improved hydrothermal methods. YAG microcrystals exhi...

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Veröffentlicht in:CrystEngComm 2018, Vol.2 (48), p.7773-7781
Hauptverfasser: Yuan, Rui, Xie, Xi-Xi, Zheng, Li-Xian, Yu, Li-Li, Hu, Jian-Feng, Qin, Hai-Ming, Zhang, Zhi-Jun, Zhao, Jing-Tai
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container_issue 48
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container_title CrystEngComm
container_volume 2
creator Yuan, Rui
Xie, Xi-Xi
Zheng, Li-Xian
Yu, Li-Li
Hu, Jian-Feng
Qin, Hai-Ming
Zhang, Zhi-Jun
Zhao, Jing-Tai
description By exploring the optimal reaction temperature and the ratio of Na 2 SO 4 to the precursor, highly symmetrical rhombic dodecahedral yttrium aluminum garnet (Y 3 Al 5 O 12 , YAG) microcrystals with a good dispersity were successfully prepared using improved hydrothermal methods. YAG microcrystals exhibit well-developed crystal faces, high crystallinity and a controllable crystal size, from hundreds of nanometers to approximately 4 μm. The morphology and crystal size of the YAG microcrystals can be controlled by changing the reaction temperature and the ratio of Na 2 SO 4 to the precursor. After analysis using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and energy dispersive spectrometry (EDS), the growth mechanism of the YAG crystals was studied in detail. Cerium doped YAG (YAG:Ce 3+ ) microcrystals exhibit an intense broad band emission at approximately 523 nm. Considering the high crystallinity, controllable size and strong emission of YAG microcrystals, one has reason to assume that they could have wide applications in many areas. Symmetrical rhombic dodecahedral YAG microcrystals were successfully prepared using improved hydrothermal methods.
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source Royal Society Of Chemistry Journals; Alma/SFX Local Collection
subjects Aluminum
Cerium
Crystal structure
Crystallinity
Crystals
Fourier transforms
Infrared analysis
Infrared spectroscopy
Microcrystals
Morphology
Particle size
Particle size distribution
Precursors
Scanning electron microscopy
Sodium sulfate
Stability
X ray spectra
X-ray diffraction
Yttrium
Yttrium-aluminum garnet
title Synthesis and characterization of rhombic dodecahedral YAG microcrystals with good dispersity, high crystallinity and controllable crystal size
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