作者: A.L.N. Stevels , J.M.P.J. Verstegen
DOI: 10.1016/S0022-2313(76)90712-2
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摘要: The Eu2+ → Mn2+ energy transfer in hexagonal aluminates containing large divalent or trivalent cations was studied. In magnetoplumbite-type lattices no effective found, whereas the β-alumina types is very efficient. phosphors with distorted magnetoplumbite structure effectiveness of ranges from moderate up to With help Dexter theory for energy-transfer phenomena, experimental results and can be explained. On basis same it postulated that magnetoplumbites at least part ions not located 4f positions spinel crystal structure, but a crystallographic position near mirror planes.