Room-Temperature A1(TO) and OH- Absorption Spectra of Zn-Doped Lithium Niobate Crystals

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概要

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• A1(TO) phonons and OH- absorption spectra of Zn-doped lithium niobate crystals were measured by Raman and infrared spectroscopies at room temperature. Zn doping concentrations are from 0 to 8.1 mol.%. The characterizations of A1(TO)-phonon lineshapes and OH- absorption bands as a function of Zn concentration were carried out. The results revealed from Raman and OH- absorption analyses show consistency in the changes of phonon lineshapes and OH- absorption bands. The spectra revealed three different stages of Zn substitution. Based on the Li-vacancy model, the proposed Zn substitution mechanism is: (i) below 5.3 mol.%, Zn atoms replace Li atoms and the total number of Li vacancies is reduced; (ii) from 5.3 to 7.5 mol.% doping, Zn atoms still replace Li atoms but the number of vacancies increases; (iii) above 7.5 mol.% doping, Zn atoms start to replace Nb atoms.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2003-09-15

著者

• Chia Chih-ta

  Department Of Physics National Taiwan Normal University

• CHANG Jung

  Institute of Optical Science, National Central University

• YANG Z.

  Center for Condensed Sciences, National Taiwan University

• CHENG Hung

  Center for Condensed Sciences, National Taiwan University

• Tse Wen-son

  Institute Of Physics Academia Sinica

• Sun May-lan

  Department Of Physics National Taiwan Normal University

• Chang Jung

  Institute of Optical Science, National Central University, Chung-Li 320, Taiwan

• Tse Wen-Son

  Institute of Physics, Academia Sinica, Taipei 115, Taiwan

• Cheng Hung

  Center for Condensed Sciences, National Taiwan University, Taipei 106, Taiwan

• Sun May-Lan

  Department of Physics, National Taiwan Normal University, Taipei 116, Taiwan

• Hu Ming-Li

  Institute of Optical Science, National Central University, Chung-Li 320, Taiwan

• Chia Chih-Ta

  Department of Physics, National Taiwan Normal University, Taipei 116, Taiwan

関連論文

• Dielectric Properties of xBa(Mg_Ta_)O_3-(1 - x )Ba(Mg_Nb_) O_3 Complex Perovskite Ceramics
• Room-Temperature A_l(TO) and OH^- Absorption Spectra of Zn-Doped Lithium Niobate Crystals
• Polarization Switching of Pure and MgO-doped Lithium Niobate Crystals
• OH- Absorption of Zn-Doped LiNbO3 Single Crystals after Proton Exchange
• Room-Temperature A1(TO) and OH- Absorption Spectra of Zn-Doped Lithium Niobate Crystals
• Dielectric Properties of $x$Ba(Mg1/3Ta2/3)O3–($1-x$)Ba(Mg1/3Nb2/3)O3 Complex Perovskite Ceramics

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