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Distortion of the Local Atomic Structure of Nb 5+ and Fe 2+ Ions in Fe:LiNbO 3 Crystals
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2021-02-20 , DOI: 10.3103/s1062873820120217 V. A. Golenishchev-Kutuzov , A. V. Golenishchev-Kutuzov , R. I. Kalimullin , A. V. Semennikov , V. A. Ulanov
中文翻译:
Fe:LiNbO 3晶体中Nb 5+和Fe 2+离子的局部原子结构畸变
更新日期:2021-02-21
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2021-02-20 , DOI: 10.3103/s1062873820120217 V. A. Golenishchev-Kutuzov , A. V. Golenishchev-Kutuzov , R. I. Kalimullin , A. V. Semennikov , V. A. Ulanov
Abstract
High frequency ultrasonic waves in the 200–300 MHz range are used to study features of charged complexes organized by O2– ions around Jahn–Teller ions Nb5+ and Fe2+ in congruent crystals of LiNbO3 doped with Fe2+. Parameters of the distortion of NbO6 and FeO6 octahedra that results from the interaction between Jahn–Teller ions and the host crystal lattice are determined from the temperature characteristics of changes in the elastic moduli.
中文翻译:
Fe:LiNbO 3晶体中Nb 5+和Fe 2+离子的局部原子结构畸变
摘要
在200-300兆赫范围的高频超声波用于被O组织电荷的复合物的研究提供2-离子周围的Jahn-Teller离子的Nb 5+和Fe 2+中的铌酸锂晶体全等3为Fe掺杂2+。由Jahn–Teller离子与主体晶格之间的相互作用引起的NbO 6和FeO 6八面体变形的参数由弹性模量变化的温度特性确定。