Optical Spectroscopy of YPO4 Single Crystals Doped with Ho3+ |
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| Authors: | R Capelletti A Baraldi E Buffagni M Mazzera N Magnani E Martin Rodriguez |
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| Institution: | 1. Dipartimento di Fisica , Università di Parma and CNISM, UdR Parma , Parma, Italy;2. European Commission, Joint Research Centre , Institute for Transuranium Elements , Karlsruhe, Germany;3. Departamento Fisica de Materiales , C-IV, Universidad Autonoma Madrid , Madrid, Spain |
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| Abstract: | ABSTRACT Crystal field absorption and emission spectra originated by 5I8 ? 5F5 transitions, due to Ho3+ (1% molar fraction) in a YPO4 single crystal, were investigated in the 15000 to 16000 cm?1 range. Fourier Transform high resolution absorption measurements, performed in the 9 to 300 K range, and photoluminescence, monitored at 10 K upon 540 nm excitation, supplied the sublevel separations within both 5I8 and 5F5 manifolds. The sublevel positions were compared to those calculated by diagonalization of the full 4f-configuration matrix in the framework of a single-ion model. The results are discussed also in relation with experimental data previously reported for similar systems containing Ho3+. |
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| Keywords: | crystal field splitting Ho3+ ion hyperfine structure luminescence |
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