Absorption spectroscopy and energy levels of rare earth impurity centres in SrxBa1-xNb2O6 crystals

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Atıf İçin Kopyala

Demirbilek R., KUTSENKO A. B., PANKRATH R., KAPPHAN S. E.

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, cilt.246, sa.6, ss.1306-1312, 2009 (SCI-Expanded)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 246 Sayı: 6
• Basım Tarihi: 2009
• Doi Numarası: 10.1002/pssb.200844336
• Dergi Adı: PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Sayfa Sayıları: ss.1306-1312
• Yıldız Teknik Üniversitesi Adresli: Evet

Özet

The absorption spectra of Ce3+, Nd3+, Eu3+, Tb3+, Er3+, Tm3+ and Yb3+ rare earth (RE) impurity ions incorporated in SrxBa1-xNb2O6 (SBN) crystals were studied in a wide spectral range from the visible to the mid-infrared. On the basis of the analysis of the Cd3+ absorption line shapes and their polarization properties the conclusion was drawn about the incorporation of multiple Ce3+ centres mostly in the position Al of the crystal lattice of SBN. From the observed temperature dependence of the Ce3+ absorption line broadening the electron coupling strength (160 cm(-1)) and effective phonon energy (300 cm(-1)) were determined. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim