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Photoacoustic Spectra of Rare Earth Pentaphosphates

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The photoacoustic (PA) spectra of rare earth pentaphosphates of the general formula REP5O14, where RE = Pr, Nd, Ho, Er, Tm, are reported. The photoacoustic bands were identified and compared with the absorption spectra. For quantitative analysis of PA bands of lanthanide (III) ions, the intensity ratio vector is introduced, characterizing the intensity distribution of f-f transitions. It was found that the relative intensities of photoacoustic bands are comparable with the intensities of absorption bands. It is concluded that the nonradiative relaxation mechanism leading to the PA signal is independent of the manifold-to-manifold J-J' radiationless transitions.

Keywords: Photoacoustic spectroscopy

Document Type: Research Article


Affiliations: 1: Institute for Low Temperature and Structure Research, Polish Academy of Sciences, Wroctaw, Poland 2: Institute of Chemistry, University of Wroctaw, Wroctaw, Poland

Publication date: May 1, 1987

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