CHARACTERISTICS OF BaHfO3∶Ce NANO—POWDER

Acta Metall Sin

2008, Vol. 44

Issue (3): 381-384 DOI:

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CHARACTERISTICS OF BaHfO3∶Ce NANO—POWDER

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. CHARACTERISTICS OF BaHfO3∶Ce NANO—POWDER. Acta Metall Sin, 2008, 44(3): 381-384 .

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Abstract The 0.5at% Ce doped-BaHfO3 nano-powders were synthesized by the co-precipitation method. XRD, TEM, DTA/TG were employed to analyze the phase change and the properties of nano-powders during the calcing process. The excitation and emission spectra were analyzed by the fluorescence photometer. Results show that the average diameter was about 30～50nm with good dispersibility and polygonal in shape after calcining at 1000℃ for 2h. There are two excitation bands at 332 and 392 nm, and two emission bands excited by the 332 nm light, peaking at 484 and 531nm. But there is only one emission band excited by the 392 nm light which peaking at 530 nm, which is corresponding to the 5d →2F5/2 and 5d →2F7/2 transitions of Ce3+ cation, and the excitation and emission spectra were both wide band.

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Received: 31 July 2007

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