Correlation of Electrical Properties and Acoustic Loss in Single Crystalline Lithium Niobate-Tantalate Solid Solutions at Elevated Temperatures

被引：18

作者：

Suhak, Yuriy ^{[1
]}

Roshchupkin, Dmitry ^{[2
]}

Redkin, Boris ^{[3
]}

Kabir, Ahsanul ^{[1
]}

Jerliu, Bujar ^{[1
]}

Ganschow, Steffen ^{[4
]}

Fritze, Holger ^{[1
]}

机构：

[1] Tech Univ Clausthal, Inst Energy Res & Phys Technol, Stollen 19B, D-38640 Goslar, Germany

[2] Russian Acad Sci, Inst Microelect Technol & High Pur Mat, Academician Ossipyan Str 6, Chernogolovka 142432, Russia

[3] Russian Acad Sci, Inst Solid State Phys, Academician Ossipyan Str 2, Chernogolovka 142432, Russia

[4] Leibniz Inst Kristallzuchtung, Max Born Str 2, D-12489 Berlin, Germany

来源：

CRYSTALS | 2021年 / 11卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

lithium niobate-tantalate; piezoelectric; acoustic; high-temperature; sensor; Q-factor; BAW resonator;

D O I：

10.3390/cryst11040398

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Electrical conductivity and acoustic loss Q(-1) of single crystalline Li(Nb,Ta)O-3 solid solutions (LNT) are studied as a function of temperature by means of impedance spectroscopy and resonant piezoelectric spectroscopy, respectively. For this purpose, bulk acoustic wave resonators with two different Nb/Ta ratios are investigated. The obtained results are compared to those previously reported for congruent LiNbO3. The temperature dependent electrical conductivity of LNT and LiNbO3 show similar behavior in air at high temperatures from 400 to 700 degrees C. Therefore, it is concluded that the dominant transport mechanism in LNT is the same as in LN, which is the Li transport via Li vacancies. Further, it is shown that losses in LNT strongly increase above about 500 degrees C, which is interpreted to originate from conductivity-related relaxation mechanism. Finally, it is shown that LNT bulk acoustic resonators exhibit significantly lower loss, comparing to that of LiNbO3.

引用

页数：16

共 11 条

[11] Optical Properties of Crystals of Lithium Niobate–Tantalate Solid Solutions LiNb\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$_{{{\text{1}}-x}}$$\end{document}TaxO3
E. V. Zabelina
A. A. Mololkin
N. S. Kozlova
V. M. Kasimova
R. R. Fakhrtdinov
V. E. Umylin
A. V. Sosunov
Crystallography Reports, 2023, 68 (7) : 1173 - 1179

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