Absorption spectra and energy levels of Sm3+:Y3Al5O12 |
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| Affiliation: | 1. Department of Physics, P.B. Siddhartha College of Arts & Science, Vijayawada 520 008, AP, India;2. Department of Physics, Andhra Loyola College, Vijayawada 520 008, AP, India;3. Department of Physics, Kakani Venkata Ratnam College, Nandigama 521 185, AP, India;1. Tohoku University, New Industry Creation Hatchery Center, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan;2. C&A Corporation, T-Biz, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan;3. Tohoku University, Institute for Material Reseach, 2-1-1 Katahira Aoba-ku, Sendai, Miyagi 980-8577, Japan;4. Institute of Physics AS CR, Cukrovarnicka 10, 16253 Prague, Czech Republic;1. Department of Materials Science, Sichuan University, 610064 Chengdu, China;2. Southwest Institute of Technical Physics, Chengdu 610041, China;1. Laboratory of Green Chemistry, Faculty of Technology, Lappeenranta University of Technology, Mikkeli FI-50100, Finland;2. Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box. 36., P.C. 123, Al-Khoudh, Muscat, Oman;3. Department of Chemical Engineering, Kwangwoon University, Seoul 139-701, Korea;4. Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, S-106 91 Stockholm, Sweden;1. Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;1. School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China;2. Auditing Department, Tianjin Polytechnic University, Tianjin 300387, China |
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| Abstract: | Absorption spectra between 0.2 and 6.7 μm are reported for trivalent samarium in single-crystal yttrium aluminum garnet, Y3Al5O12, at liquid-helium, liquid-nitrogen, and room temperatures. Energy levels (4f5[SL]Jμ) associated with sextet, quartet, and doublet states of Sm3+ are established from data between 1500 and 46000 cm−1. Most samarium ions occupy yttrium ion sites, which have D2 point-group symmetry in the lattice. A free-ion wavefunction calculation predicts the assignment of 35 isolated [SL]J manifolds with an rms deviation of 32 cm−1 between calculated and observed centers of gravity. A hamiltonian consisting of coulombic, spin—orbit, and crystalline electric field (D2 symmetry) terms is diagonalized for the two lowest sextet states [6H]J and [6F]J. The calculated Stark levels based on a single set of Bkm crystal field parameters are compared to the observed levels (54) yielding an rms deviation of 4.9 cm−1. |
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