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Citation: Wu Yinh, Shi Chun-Shan. Elecutron Transfer and its Equilibrium between Eu and Tb in SrMgF₄ System[J]. Acta Physico-Chimica Sinica, ;1995, 11(10): 907-911. doi: 10.3866/PKU.WHXB19951010 shu

Elecutron Transfer and its Equilibrium between Eu and Tb in SrMgF₄ System

Wu Yinh ,
Shi Chun-Shan

1.
Laboratory of Rare Earth Chemistry and Physics,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022

Received Date: 3 December 1994
Available Online: 15 October 1995

Emission of europium(Ⅱ) and europium(Ⅲ) have been observed in SrMgF4:xEu, yTb phosphors which are synthesized in Ar flow. The valence state of Eu is influenced by terbium. It is noted that the intensities of the ESR peaks corresponding to Eu2+are increased when terbium ion is codoped, this can be explained by electron transfer mechanism which is Eu3++Tb3+ →Eu2++Tb4+. And its equilibrium constant is calculated.
- Rare earth valence,
- Electron transfer,
- ESR spectrum
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Elecutron Transfer and its Equilibrium between Eu and Tb in SrMgF4 System

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Elecutron Transfer and its Equilibrium between Eu and Tb in SrMgF₄ System