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  • 1980-1984  (1)
  • 42.60  (1)
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  • 1980-1984  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 32 (1983), S. 159-161 
    ISSN: 1432-0630
    Keywords: 66.30 ; 61.70 ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The entire sodium ion content of sodiumβ″ alumina (Na1.67Mg0.67Al10.33O17) can be replaced with a variety of lanthanide ions by simple diffusion reactions at moderate temperatures (500–700°C). Lanthanideβ″ alumina crystals are hard, clear, chemically stable, and have well-defined crystal structures. The fluorescence spectrum of Nd3+ inβ″ alumina is similar to that in YAG. The lifetime of the4 F 3/2 state of Nd3+ in completely-exchangedβ″ alumina (350μs at 1021 Nd3+ cm−3) is about 45% longer than in YAG (240μs at 1020Nd3+ cm−3). The lanthanideβ″ aluminas may be of considerable interest as new phosphor and laser host materials.
    Type of Medium: Electronic Resource
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