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

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

Electrical conductivity and acoustic loss <i>Q</i><sup>−1</sup> of single crystalline Li(Nb,Ta)O<sub>3</sub> solid solutions (LNT) are studied as a function of temperature by means of impedance spectroscopy and resonant piezoelectric spectroscopy, respectively. Fo...

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Main Authors: Yuriy Suhak, Dmitry Roshchupkin, Boris Redkin, Ahsanul Kabir, Bujar Jerliu, Steffen Ganschow, Holger Fritze
Format: Article
Language:English
Published: MDPI AG 2021-04-01
Series:Crystals
Subjects:
lithium niobate-tantalate
piezoelectric
acoustic
high-temperature
sensor
<i>Q</i>-factor
Online Access:https://www.mdpi.com/2073-4352/11/4/398
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spelling doaj-705bc950bb334fb6a1a3ab9553aa8aae2021-04-09T23:05:28ZengMDPI AGCrystals2073-43522021-04-011139839810.3390/cryst11040398Correlation of Electrical Properties and Acoustic Loss in Single Crystalline Lithium Niobate-Tantalate Solid Solutions at Elevated TemperaturesYuriy Suhak0Dmitry Roshchupkin1Boris Redkin2Ahsanul Kabir3Bujar Jerliu4Steffen Ganschow5Holger Fritze6Institute for Energy Research and Physical Technologies, Clausthal University of Technology, Am Stollen 19B, 38640 Goslar, GermanyInstitute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, Academician Ossipyan Str. 6, 142432 Chernogolovka, RussiaInstitute of Solid State Physics, Russian Academy of Sciences, Academician Ossipyan Str. 2, 142432 Chernogolovka, RussiaInstitute for Energy Research and Physical Technologies, Clausthal University of Technology, Am Stollen 19B, 38640 Goslar, GermanyInstitute for Energy Research and Physical Technologies, Clausthal University of Technology, Am Stollen 19B, 38640 Goslar, GermanyLeibniz-Institut für Kristallzüchtung, Max-Born-Str. 2, 12489 Berlin, GermanyInstitute for Energy Research and Physical Technologies, Clausthal University of Technology, Am Stollen 19B, 38640 Goslar, GermanyElectrical conductivity and acoustic loss <i>Q</i><sup>−1</sup> of single crystalline Li(Nb,Ta)O<sub>3</sub> 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 LiNbO<sub>3</sub>. The temperature dependent electrical conductivity of LNT and LiNbO<sub>3</sub> show similar behavior in air at high temperatures from 400 to 700 °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 °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 LiNbO<sub>3</sub>.https://www.mdpi.com/2073-4352/11/4/398lithium niobate-tantalatepiezoelectricacoustichigh-temperaturesensor<i>Q</i>-factor
collection DOAJ
language English
format Article
sources DOAJ
author Yuriy Suhak
Dmitry Roshchupkin
Boris Redkin
Ahsanul Kabir
Bujar Jerliu
Steffen Ganschow
Holger Fritze
spellingShingle Yuriy Suhak
Dmitry Roshchupkin
Boris Redkin
Ahsanul Kabir
Bujar Jerliu
Steffen Ganschow
Holger Fritze
Correlation of Electrical Properties and Acoustic Loss in Single Crystalline Lithium Niobate-Tantalate Solid Solutions at Elevated Temperatures
Crystals
lithium niobate-tantalate
piezoelectric
acoustic
high-temperature
sensor
<i>Q</i>-factor
author_facet Yuriy Suhak
Dmitry Roshchupkin
Boris Redkin
Ahsanul Kabir
Bujar Jerliu
Steffen Ganschow
Holger Fritze
author_sort Yuriy Suhak
title Correlation of Electrical Properties and Acoustic Loss in Single Crystalline Lithium Niobate-Tantalate Solid Solutions at Elevated Temperatures
title_short Correlation of Electrical Properties and Acoustic Loss in Single Crystalline Lithium Niobate-Tantalate Solid Solutions at Elevated Temperatures
title_full Correlation of Electrical Properties and Acoustic Loss in Single Crystalline Lithium Niobate-Tantalate Solid Solutions at Elevated Temperatures
title_fullStr Correlation of Electrical Properties and Acoustic Loss in Single Crystalline Lithium Niobate-Tantalate Solid Solutions at Elevated Temperatures
title_full_unstemmed Correlation of Electrical Properties and Acoustic Loss in Single Crystalline Lithium Niobate-Tantalate Solid Solutions at Elevated Temperatures
title_sort correlation of electrical properties and acoustic loss in single crystalline lithium niobate-tantalate solid solutions at elevated temperatures
publisher MDPI AG
series Crystals
issn 2073-4352
publishDate 2021-04-01
description Electrical conductivity and acoustic loss <i>Q</i><sup>−1</sup> of single crystalline Li(Nb,Ta)O<sub>3</sub> 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 LiNbO<sub>3</sub>. The temperature dependent electrical conductivity of LNT and LiNbO<sub>3</sub> show similar behavior in air at high temperatures from 400 to 700 °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 °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 LiNbO<sub>3</sub>.
topic lithium niobate-tantalate
piezoelectric
acoustic
high-temperature
sensor
<i>Q</i>-factor
url https://www.mdpi.com/2073-4352/11/4/398
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