Growth and properties of Ru-doped lithium niobate crystal

Chang Hung Chiang; Jyh Chen Chen

doi:10.1016/j.jcrysgro.2006.06.022

Growth and properties of Ru-doped lithium niobate crystal

Chang Hung Chiang, Jyh Chen Chen

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

Ruthenium (Ru)-doped lithium niobate (LiNbO₃) single crystals were grown by the Czochralski method from a congruent melt composition. The color of the Ru: LiNbO₃ was red and darkened with increasing Ru concentration. The Ru concentration in the grown crystal gradually decreased along the pulling direction because the effective segregation coefficient of Ru in lithium niobate is greater than one, and also because RuO₂ evaporated during the crystal growth period. However, a solubility limit does exist in Ru: LiNbO₃ crystals, so the maximum amount of Ru doped into LiNbO₃ single crystals is about 0.2 mol%. In addition, the lattice constants of Ru: LiNbO₃ on the A- and C-axis decreased with the concentration of Ru in the crystal. An absorption spectra examination of Ru: LiNbO₃ showed that there were two absorption peaks around 370 and 530 nm that is within the UV/VIS region. The absorption coefficients should increase, and the absorption edges shift toward longer wavelength as the Ru concentration increases. The OH^- absorption spectra confirm that Ru ions may have substituted for both Li vacancies (V^-_Li) and antisite Nb ions (Nb⁴⁺_Li) as the Ru doping concentration in the present case is well below the threshold limit.

Original language	English
Pages (from-to)	323-329
Number of pages	7
Journal	Journal of Crystal Growth
Volume	294
Issue number	2
DOIs	https://doi.org/10.1016/j.jcrysgro.2006.06.022
State	Published - 4 Sep 2006

Keywords

A1. Doping
A1. Segregation
A1. Solubility
A2. Czochralski method
A2. Single crystal growth
B1. Lithium niobate

Access to Document

10.1016/j.jcrysgro.2006.06.022

Cite this

@article{99143451dbd947fba216069360d9488d,

title = "Growth and properties of Ru-doped lithium niobate crystal",

abstract = "Ruthenium (Ru)-doped lithium niobate (LiNbO3) single crystals were grown by the Czochralski method from a congruent melt composition. The color of the Ru: LiNbO3 was red and darkened with increasing Ru concentration. The Ru concentration in the grown crystal gradually decreased along the pulling direction because the effective segregation coefficient of Ru in lithium niobate is greater than one, and also because RuO2 evaporated during the crystal growth period. However, a solubility limit does exist in Ru: LiNbO3 crystals, so the maximum amount of Ru doped into LiNbO3 single crystals is about 0.2 mol%. In addition, the lattice constants of Ru: LiNbO3 on the A- and C-axis decreased with the concentration of Ru in the crystal. An absorption spectra examination of Ru: LiNbO3 showed that there were two absorption peaks around 370 and 530 nm that is within the UV/VIS region. The absorption coefficients should increase, and the absorption edges shift toward longer wavelength as the Ru concentration increases. The OH- absorption spectra confirm that Ru ions may have substituted for both Li vacancies (V-Li) and antisite Nb ions (Nb4+Li) as the Ru doping concentration in the present case is well below the threshold limit.",

keywords = "A1. Doping, A1. Segregation, A1. Solubility, A2. Czochralski method, A2. Single crystal growth, B1. Lithium niobate",

author = "Chiang, {Chang Hung} and Chen, {Jyh Chen}",

note = "Funding Information: The authors gratefully acknowledge the support of the National Science Council of Taiwan, ROC for this work, through Grant No. NSC 93-2212-E-008-011.",

year = "2006",

month = sep,

day = "4",

doi = "10.1016/j.jcrysgro.2006.06.022",

language = "???core.languages.en_GB???",

volume = "294",

pages = "323--329",

journal = "Journal of Crystal Growth",

issn = "0022-0248",

number = "2",

}

TY - JOUR

T1 - Growth and properties of Ru-doped lithium niobate crystal

AU - Chiang, Chang Hung

AU - Chen, Jyh Chen

N1 - Funding Information: The authors gratefully acknowledge the support of the National Science Council of Taiwan, ROC for this work, through Grant No. NSC 93-2212-E-008-011.

PY - 2006/9/4

Y1 - 2006/9/4

N2 - Ruthenium (Ru)-doped lithium niobate (LiNbO3) single crystals were grown by the Czochralski method from a congruent melt composition. The color of the Ru: LiNbO3 was red and darkened with increasing Ru concentration. The Ru concentration in the grown crystal gradually decreased along the pulling direction because the effective segregation coefficient of Ru in lithium niobate is greater than one, and also because RuO2 evaporated during the crystal growth period. However, a solubility limit does exist in Ru: LiNbO3 crystals, so the maximum amount of Ru doped into LiNbO3 single crystals is about 0.2 mol%. In addition, the lattice constants of Ru: LiNbO3 on the A- and C-axis decreased with the concentration of Ru in the crystal. An absorption spectra examination of Ru: LiNbO3 showed that there were two absorption peaks around 370 and 530 nm that is within the UV/VIS region. The absorption coefficients should increase, and the absorption edges shift toward longer wavelength as the Ru concentration increases. The OH- absorption spectra confirm that Ru ions may have substituted for both Li vacancies (V-Li) and antisite Nb ions (Nb4+Li) as the Ru doping concentration in the present case is well below the threshold limit.

AB - Ruthenium (Ru)-doped lithium niobate (LiNbO3) single crystals were grown by the Czochralski method from a congruent melt composition. The color of the Ru: LiNbO3 was red and darkened with increasing Ru concentration. The Ru concentration in the grown crystal gradually decreased along the pulling direction because the effective segregation coefficient of Ru in lithium niobate is greater than one, and also because RuO2 evaporated during the crystal growth period. However, a solubility limit does exist in Ru: LiNbO3 crystals, so the maximum amount of Ru doped into LiNbO3 single crystals is about 0.2 mol%. In addition, the lattice constants of Ru: LiNbO3 on the A- and C-axis decreased with the concentration of Ru in the crystal. An absorption spectra examination of Ru: LiNbO3 showed that there were two absorption peaks around 370 and 530 nm that is within the UV/VIS region. The absorption coefficients should increase, and the absorption edges shift toward longer wavelength as the Ru concentration increases. The OH- absorption spectra confirm that Ru ions may have substituted for both Li vacancies (V-Li) and antisite Nb ions (Nb4+Li) as the Ru doping concentration in the present case is well below the threshold limit.

KW - A1. Doping

KW - A1. Segregation

KW - A1. Solubility

KW - A2. Czochralski method

KW - A2. Single crystal growth

KW - B1. Lithium niobate

UR - http://www.scopus.com/inward/record.url?scp=33947190461&partnerID=8YFLogxK

U2 - 10.1016/j.jcrysgro.2006.06.022

DO - 10.1016/j.jcrysgro.2006.06.022

M3 - 期刊論文

AN - SCOPUS:33947190461

SN - 0022-0248

VL - 294

SP - 323

EP - 329

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

IS - 2

ER -

Growth and properties of Ru-doped lithium niobate crystal

Abstract

Keywords

Access to Document

Fingerprint

Cite this