Lattice Deformation and Lattice Strain of BaMgAl10O17: Eu2+ Induced by Thermal Treatment
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概要
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Structural properties of thermally deteriorated BaMgAl10O17:Eu2+ (BAM) phosphors have been characterized by the Rietveld analysis with powder X-ray diffraction (XRD) data by clarifying the mechanism of the luminescent decrease (thermal degradation). Fine powder particles of BAM including the non-doped one were synthesized using three types of procedures: an amorphous citric acid precursor (ACP) method, an amorphous malic acid precursor (AMP) method, and a spray pyrolysis (SP) method. The particles were then calcined at 900°C in air by thermally deteriorating the samples. The lattice parameters for the Eu doped BAM clearly showed the deformation of the unit-cell, whereas the non-doped BAM showed no deformation. Together with the lattice deformation, the anisotropic lattice strains were also induced in the doped BAM. These results suggest that any defects are generated in the lattice by the thermal treatment and therefore the thermal degradation in BAM is possibly attributed to the defects.
- 公益社団法人 日本セラミックス協会の論文
公益社団法人 日本セラミックス協会 | 論文
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