Luminescence Spectra of ZnAl_2O_4:Cr^{3+} Spinel Nanopowders

• Authors: H. Luc , T. Nguyen , V. Nguyen , A. Suchocki , A. Kamińska , V. Le , V. Nguyen , T. Luong
• Languages of publication: EN

Abstracts

EN

The synthetic ZnAl_2O_4 spinels doped with Cr^{3+} ions are prepared from ZnSO_4, Al_2(SO_4)_3, and Cr_2(SO_4)_3. The spinel single phase is detected from X-ray diffraction. Luminescence properties of Cr^{3+} in ZnAl_2O_4 were studied by low temperature luminescence and decay measurements. Four luminescence lines at 14570, 14520, 14460, and 14330 cm^{-1} were found to originate from structure distortion and the line at 14175 cm^{-1} - from chromium pairs. The broad emission band at about 13540 cm^{-1} is considered to arise from a new Cr^{3+} center in ZnCr_2O_4.

Keywords

EN

78.60.-b   72.80.Ga   81.05.Je   81.05.Mh  

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2003
• Volume: 104
• Issue: 6
• Pages: 581-587

Dates

published

2003-12

received

2003-09-30

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Identifiers

DOI

10.12693/APhysPolA.104.581