The Color Sift of Cerium Molybdenum Sheelite by Substituting Bi3 + or W6 + Ion

T. Odaki, K. Hashimoto, Y. Toda
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引用次数: 3

Abstract

We prepared chemical compounds whose Ce 3+ ions are replaced with Bi 3 + ions at a certain rate in LiCeMo 2 O 8 , NaCeMo 2 O 8 , Ca 0.5 CeMo 2 O 8 , and Sr 0.5 CeMo 2 O 8 that have the sheelite crystal structure, and the change of the hue of these materials was investigated. In addition, the cause of Ce 3+ ion color development in the sheelite structure was studied based on the result of substituting Bi 3+ ions for Ce 3+ ions and change of the hue of the compounds whose Mo 6+ ions are replaced with W 6+ ions. The result revealed that the absorption edge shifted to the longer wavelength side as the amount of the replaced Bi 3 + ions increased, and the hue of the product changed from yellow to reddish yellow. The changes in the chemical bonding nature of the crystal were found to give a great impact on the color development of the Ce 3+ ion. Although the Ce 3+ ion takes on the yellow hue in the sheelite crystal structure, its absorption edge can be shifted freely by generating the substitutional solid solution of metal ions with different electronegativity.
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用Bi3 +或W6 +离子取代铈钼板的颜色筛选
我们在licemo2o8、nacemo2o8、ca0.5 cemo2o8和sr0.5 cemo2o8中制备了具有层状晶体结构的ce3 +离子以一定速率被bi3 +离子取代的化合物,并研究了这些材料的色相变化。此外,通过用bi3 +离子取代ce3 +离子的结果,以及用w6 +离子取代mo6 +离子后化合物的色相变化,研究了ce3 +离子在板层结构中显色的原因。结果表明,随着bi3 +取代量的增加,吸收边向较长波边偏移,产物的颜色由黄色变为红黄色。发现晶体化学键性质的变化对ce3 +离子的显色有很大的影响。虽然ce3 +离子在膜层晶体结构中呈现黄色色调,但通过产生不同电负性金属离子的取代固溶体,其吸收边可以自由移动。
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