{"title":"Near stoichiometric lithium niobate crystal with dramatically enhanced piezoelectric performance for high-temperature acceleration sensing†","authors":"Guoliang Wang, Fulei Wang, Xi Gao, Dongzhou Wang, Wei Song, Yanlu Li, Xueliang Liu, Yuanhua Sang, Fapeng Yu and Xian Zhao","doi":"10.1039/D4TC02466D","DOIUrl":null,"url":null,"abstract":"<p >Lithium niobate (LN) is a multifunctional crystal with excellent piezoelectric properties, making it a potential candidate for piezoelectric sensing applications. In this study, the mechanism of the discrepancies of piezoelectric properties between near stoichiometric lithium niobate (NSLN) and congruent lithium niobate (CLN) were probed using Raman spectrum, first principles calculations and single crystal X-ray diffraction (XRD), where the V<small><sup>−</sup></small><small><sub>Li</sub></small> defect demonstrated a significant impact on the distortion of the NbO<small><sub>6</sub></small> octahedron, which in turn affected the piezoelectric properties of the LN crystal. The NSLN crystal exhibited a strong performance, with high piezoelectric coefficients <em>d</em><small><sub>15</sub></small> an<em>d d</em><small><sub>22</sub></small> on the orders of 77.6 pC N<small><sup>−1</sup></small> and 22.8 pC N<small><sup>−1</sup></small>, respectively, showing increases of 17.4% and 18.1% over the CLN crystal, and highlighting its enhanced piezoelectric characteristics. Finally, temperature-dependent behaviours of the electro-elastic constants for the NSLN and CLN crystals were discussed. The high-temperature piezoelectric performance of NSLN crystal was evaluated utilizing a prototype of shear-mode acceleration sensor, demonstrating remarkable sensing performance up to 650 °C with good temperature stability (sensitivity variation <5%).</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7000,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Chemistry C","FirstCategoryId":"1","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/tc/d4tc02466d","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Lithium niobate (LN) is a multifunctional crystal with excellent piezoelectric properties, making it a potential candidate for piezoelectric sensing applications. In this study, the mechanism of the discrepancies of piezoelectric properties between near stoichiometric lithium niobate (NSLN) and congruent lithium niobate (CLN) were probed using Raman spectrum, first principles calculations and single crystal X-ray diffraction (XRD), where the V−Li defect demonstrated a significant impact on the distortion of the NbO6 octahedron, which in turn affected the piezoelectric properties of the LN crystal. The NSLN crystal exhibited a strong performance, with high piezoelectric coefficients d15 and d22 on the orders of 77.6 pC N−1 and 22.8 pC N−1, respectively, showing increases of 17.4% and 18.1% over the CLN crystal, and highlighting its enhanced piezoelectric characteristics. Finally, temperature-dependent behaviours of the electro-elastic constants for the NSLN and CLN crystals were discussed. The high-temperature piezoelectric performance of NSLN crystal was evaluated utilizing a prototype of shear-mode acceleration sensor, demonstrating remarkable sensing performance up to 650 °C with good temperature stability (sensitivity variation <5%).
期刊介绍:
The Journal of Materials Chemistry is divided into three distinct sections, A, B, and C, each catering to specific applications of the materials under study:
Journal of Materials Chemistry A focuses primarily on materials intended for applications in energy and sustainability.
Journal of Materials Chemistry B specializes in materials designed for applications in biology and medicine.
Journal of Materials Chemistry C is dedicated to materials suitable for applications in optical, magnetic, and electronic devices.
Example topic areas within the scope of Journal of Materials Chemistry C are listed below. This list is neither exhaustive nor exclusive.
Bioelectronics
Conductors
Detectors
Dielectrics
Displays
Ferroelectrics
Lasers
LEDs
Lighting
Liquid crystals
Memory
Metamaterials
Multiferroics
Photonics
Photovoltaics
Semiconductors
Sensors
Single molecule conductors
Spintronics
Superconductors
Thermoelectrics
Topological insulators
Transistors