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Preparation and Spectroscopy of Lanthanide Single Crystals with Isoleucine

100%

Legendziewicz J., Ciunik Z., Gawryszewska P., Sokolnicki J.

Acta Physica Polonica A

1993

vol. 84

issue 5

917-923

Single crystals of lanthanide complexes (Ln = Pr, Nd, Eu) were obtained from aqueous solutions. Optical properties of the title compound are investigated by absorption, excitation, and emission spectra. Probabilities of electronic transitions were analysed and participation of vibronic components in the spectra were found. Temperature effect on the spectra was studied and analysed in terms of cooperative interaction.

Comparison of Optical Properties of Eu^{3+} Ions in the Silica Gel Glasses Obtained by Different Preparation Techniques

88%

Legendziewicz J., Stręk W., Sokolnicki J., Keller B., Borzechowska M.

Acta Physica Polonica A

1996

vol. 90

issue 2

461-468

Silica sol-gel glasses doped with Eu^{3+} ions were obtained by different preparation techniques. The absorption, emission and excitation spectra of the obtained glasses were measured in the range of 77-300 K. The energy level diagrams of Eu^{3+} ions were derived. An intensity analysis of f-f transitions was performed. In particular, polymeric structure behaviour of europium compounds entrapped in silica gels glasses was temperature controlled during the preparation of glasses. Their optical properties were investigated.

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2 Acta Physica Polonica A

1 1996

1 1993

2 Legendziewicz J.

2 Sokolnicki J.

1 Borzechowska M.

1 Ciunik Z.

1 Gawryszewska P.

1 Keller B.

1 Stręk W.

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Preparation and Spectroscopy of Lanthanide Single Crystals with Isoleucine

Comparison of Optical Properties of Eu^{3+} Ions in the Silica Gel Glasses Obtained by Different Preparation Techniques