Physical properties of the nonlinear optical material Li2B4O7 studied by static NMR and MAS NMR |
| |
| Affiliation: | 1. Department of Science Education, Jeonju University, Jeonju 560-759, Republic of Korea;2. Department of Carbon Fusion Engineering, Jeonju University, Jeonju 560-759, Republic of Korea;1. School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;2. Department of Physics, Center for Ion Beam Application and Center for Electron Microscopy, Wuhan University, Wuhan 430072, China;1. Institute of Physics – Center for Science and Education, Silesian University of Technology, Krzywoustego 2, 44-100 Gliwice, Poland;2. Department of Materials Science, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland;1. Department of Advanced Materials Science & Engineering, Hanseo University, Chungnam 356-706, Korea;2. Division of Electronic, Computer and Communication Engineering, Hanseo University, Chungnam 356-706, Korea |
| |
| Abstract: | 
The mechanisms behind the nonlinear optical (NLO) properties of Li2B4O7 are characterized by 7Li static nuclear magnetic resonance (NMR) and magic-angle spinning (MAS) NMR. Furthermore, the structural nature of 3-coordinate BO3 and 4-coordinate BO4 groups is also characterized by the same method. For 7Li and 11B, the spin-lattice relaxation time T1 in laboratory frame gradually decreases with increasing temperature, whereas the spin-lattice relaxation time T1ρ in rotating frame, which differs from T1, is nearly constant. In addition, the activation energies of 7Li and 11B, which are obtained via the values of T1 and T1ρ, are also compared. |
| |
| Keywords: | Nonlinear optical material MAS NMR Static NMR Relaxation time |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
