Transparent cobalt doped MgO-Ga{sub 2}O{sub 3}-SiO{sub 2} nano-glass-ceramic composites

Journal Article · Mon Oct 30 00:00:00 EST 2006 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2378401· OSTI ID:20880081

Duan, X L; Yuan, D R; Yu, F P; Wang, L H ^[1]

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1. State Key Laboratory of Crystal Materials, Shandong University, Jinan, Shandong 250100 (China)

Transparent cobalt doped MgO-Ga{sub 2}O{sub 3}-SiO{sub 2} nano-glass-ceramic composites were prepared from Si, Ga, Mg, and Co molecular precursors by a sol-gel method. X-ray diffraction patterns and transmission electron microscopy showed that the resulting material is composed of an amorphous silicate network that encloses nanocrystalline MgGa{sub 2}O{sub 4} particles. Analysis of the absorption and luminescence properties indicates that Co ions are, at least partially, trapped in the crystalline phase and located in tetrahedral sites in MgGa{sub 2}O{sub 4} nanocrystals. The absorption section was calculated to be 1.15x10{sup -19} cm{sup 2}.

• OSTI ID: 20880081
• Journal Information: Applied Physics Letters, Vol. 89, Issue 18; Other Information: DOI: 10.1063/1.2378401; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION
ABSORPTION SPECTRA
CERAMICS
COBALT
COBALT IONS
COMPOSITE MATERIALS
CRYSTALS
DOPED MATERIALS
GALLIUM OXIDES
GLASS
IMPURITIES
MAGNESIUM OXIDES
NANOSTRUCTURES
PHOTOLUMINESCENCE
SILICATES
SILICON OXIDES
SOL-GEL PROCESS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION