Cooperative luminescence of ytterbium(III) in La2O3
β Scribed by R.T. Wegh; A. Meijerink
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 272 KB
- Volume
- 246
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Cooperative luminescence is reported for a dilute rare earth system, viz. La203-Yb 3+ 0.5 mol%. The observation of cooperative luminescence can be understood on the basis of the relatively strong interaction between the 4f electrons of neighbouring Yb 3+ ions (in comparison to other rare earth ions) in a covalent host lattice such as La203.
π SIMILAR VOLUMES
The luminescence intensity of Bi 3+ in Y203 decreases not only on increasing but also on decreasing the temperature. An explanation is proposed and the nature of the nonradiative process is discussed. Data on Bi3+-activated Lu203 and La203 are also reported.